qemu_validate: Fix how qemuValidateDomainDeviceDefZPCIAddress() is called

To make the code future proof, the rest of the
qemuValidateDomainDeviceDefAddress() has to be executed (even
though there is nothing there yet) instead of returning directly.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
Reviewed-by: NAndrea Bolognani <abologna@redhat.com>

src/qemu/qemu_validate.c

@@ -1057,7 +1057,9 @@ qemuValidateDomainDeviceDefAddress(const virDomainDeviceDef *dev,
 
     switch ((virDomainDeviceAddressType) info->type) {
     case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI:
-        return qemuValidateDomainDeviceDefZPCIAddress(info, qemuCaps);
+        if (qemuValidateDomainDeviceDefZPCIAddress(info, qemuCaps) < 0)
+            return -1;
+        break;
 
     case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE:
         /* Address validation might happen before we have had a chance to