[PULL 39/68] hw/intc: Check @errp to handle the error of IOAPICCommonClass.realize()

[Michael S. Tsirkin]

From: Zhao Liu <zhao1.liu@intel.com>

IOAPICCommonClass implements its own private realize(), and this private
realize() allows error.

Since IOAPICCommonClass.realize() returns void, to check the error,
dereference @errp with ERRP_GUARD().

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Message-Id: <20240223085653.1255438-8-zhao1.liu@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/intc/ioapic_common.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/intc/ioapic_common.c b/hw/intc/ioapic_common.c
index cb9bf62146..efbe6958c8 100644
--- a/hw/intc/ioapic_common.c
+++ b/hw/intc/ioapic_common.c
@@ -152,6 +152,7 @@ static int ioapic_dispatch_post_load(void *opaque, int 
version_id)
 
 static void ioapic_common_realize(DeviceState *dev, Error **errp)
 {
+    ERRP_GUARD();
     IOAPICCommonState *s = IOAPIC_COMMON(dev);
     IOAPICCommonClass *info;
 
@@ -162,6 +163,9 @@ static void ioapic_common_realize(DeviceState *dev, Error 
**errp)
 
     info = IOAPIC_COMMON_GET_CLASS(s);
     info->realize(dev, errp);
+    if (*errp) {
+        return;
+    }
 
     sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->io_memory);
     ioapic_no++;
-- 
MST