hw/i386/pc_sysfw: Use qdev_is_realized() instead of QOM API

Prefer QDev API for QDev objects, avoid the underlying QOM layer.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Message-Id: <20240216110313.17039-3-philmd@linaro.org>
diff --git a/hw/i386/pc_sysfw.c b/hw/i386/pc_sysfw.c
index 2dcaa11..b02e285 100644
--- a/hw/i386/pc_sysfw.c
+++ b/hw/i386/pc_sysfw.c
@@ -95,17 +95,15 @@
 {
     char *prop_name;
     int i;
-    Object *dev_obj;
 
     assert(PC_MACHINE_GET_CLASS(pcms)->pci_enabled);
 
     for (i = 0; i < ARRAY_SIZE(pcms->flash); i++) {
-        dev_obj = OBJECT(pcms->flash[i]);
-        if (!object_property_get_bool(dev_obj, "realized", &error_abort)) {
+        if (!qdev_is_realized(DEVICE(pcms->flash[i]))) {
             prop_name = g_strdup_printf("pflash%d", i);
             object_property_del(OBJECT(pcms), prop_name);
             g_free(prop_name);
-            object_unparent(dev_obj);
+            object_unparent(OBJECT(pcms->flash[i]));
             pcms->flash[i] = NULL;
         }
     }