qdev: Use returned bool to check for qdev_realize() etc. failure

Convert

    foo(..., &err);
    if (err) {
        ...
    }

to

    if (!foo(..., &err)) {
        ...
    }

for qdev_realize(), qdev_realize_and_unref(), qbus_realize() and their
wrappers isa_realize_and_unref(), pci_realize_and_unref(),
sysbus_realize(), sysbus_realize_and_unref(), usb_realize_and_unref().
Coccinelle script:

    @@
    identifier fun = {
        isa_realize_and_unref, pci_realize_and_unref, qbus_realize,
        qdev_realize, qdev_realize_and_unref, sysbus_realize,
        sysbus_realize_and_unref, usb_realize_and_unref
    };
    expression list args, args2;
    typedef Error;
    Error *err;
    @@
    -    fun(args, &err, args2);
    -    if (err)
    +    if (!fun(args, &err, args2))
         {
             ...
         }

Chokes on hw/arm/musicpal.c's lcd_refresh() with the unhelpful error
message "no position information".  Nothing to convert there; skipped.

Fails to convert hw/arm/armsse.c, because Coccinelle gets confused by
ARMSSE being used both as typedef and function-like macro there.
Converted manually.

A few line breaks tidied up manually.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20200707160613.848843-5-armbru@redhat.com>

3 files changed, 5 insertions, 10 deletions

diff --git a/hw/pci-host/pnv_phb3.c b/hw/pci-host/pnv_phb3.c
index 3ec904a55f..7b547b1d78 100644
--- a/hw/pci-host/pnv_phb3.c
+++ b/hw/pci-host/pnv_phb3.c
@@ -1003,8 +1003,7 @@ static void pnv_phb3_realize(DeviceState *dev, Error **errp)
                                    &error_abort);
     object_property_set_int(OBJECT(&phb->lsis), PNV_PHB3_NUM_LSI, "nr-irqs",
                             &error_abort);
-    qdev_realize(DEVICE(&phb->lsis), NULL, &local_err);
-    if (local_err) {
+    if (!qdev_realize(DEVICE(&phb->lsis), NULL, &local_err)) {
         error_propagate(errp, local_err);
         return;
     }
@@ -1022,8 +1021,7 @@ static void pnv_phb3_realize(DeviceState *dev, Error **errp)
                                    &error_abort);
     object_property_set_int(OBJECT(&phb->msis), PHB3_MAX_MSI, "nr-irqs",
                             &error_abort);
-    qdev_realize(DEVICE(&phb->msis), NULL, &local_err);
-    if (local_err) {
+    if (!qdev_realize(DEVICE(&phb->msis), NULL, &local_err)) {
         error_propagate(errp, local_err);
         return;
     }
@@ -1031,8 +1029,7 @@ static void pnv_phb3_realize(DeviceState *dev, Error **errp)
     /* Power Bus Common Queue */
     object_property_set_link(OBJECT(&phb->pbcq), OBJECT(phb), "phb",
                                    &error_abort);
-    qdev_realize(DEVICE(&phb->pbcq), NULL, &local_err);
-    if (local_err) {
+    if (!qdev_realize(DEVICE(&phb->pbcq), NULL, &local_err)) {
         error_propagate(errp, local_err);
         return;
     }
diff --git a/hw/pci-host/pnv_phb4.c b/hw/pci-host/pnv_phb4.c
index 10716d759d..53c2b1785b 100644
--- a/hw/pci-host/pnv_phb4.c
+++ b/hw/pci-host/pnv_phb4.c
@@ -1218,8 +1218,7 @@ static void pnv_phb4_realize(DeviceState *dev, Error **errp)
     }
     object_property_set_int(OBJECT(xsrc), nr_irqs, "nr-irqs", &error_fatal);
     object_property_set_link(OBJECT(xsrc), OBJECT(phb), "xive", &error_fatal);
-    qdev_realize(DEVICE(xsrc), NULL, &local_err);
-    if (local_err) {
+    if (!qdev_realize(DEVICE(xsrc), NULL, &local_err)) {
         error_propagate(errp, local_err);
         return;
     }
diff --git a/hw/pci-host/pnv_phb4_pec.c b/hw/pci-host/pnv_phb4_pec.c
index 2d634c838e..45a1b3719d 100644
--- a/hw/pci-host/pnv_phb4_pec.c
+++ b/hw/pci-host/pnv_phb4_pec.c
@@ -390,8 +390,7 @@ static void pnv_pec_realize(DeviceState *dev, Error **errp)
 
         object_property_set_int(stk_obj, i, "stack-no", &error_abort);
         object_property_set_link(stk_obj, OBJECT(pec), "pec", &error_abort);
-        qdev_realize(DEVICE(stk_obj), NULL, &local_err);
-        if (local_err) {
+        if (!qdev_realize(DEVICE(stk_obj), NULL, &local_err)) {
             error_propagate(errp, local_err);
             return;
         }