vfio/platform: Move VFIODevice initializations in vfio_platform_insta…

…nce_init

Some of the VFIODevice initializations is in vfio_platform_realize,
move all of them in vfio_platform_instance_init.

No functional change intended.

Suggested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>

hw/vfio/platform.c

@@ -581,10 +581,6 @@ static void vfio_platform_realize(DeviceState *dev, Error **errp)
     VFIODevice *vbasedev = &vdev->vbasedev;
     int i, ret;
 
-    vbasedev->type = VFIO_DEVICE_TYPE_PLATFORM;
-    vbasedev->dev = dev;
-    vbasedev->ops = &vfio_platform_ops;
-
     qemu_mutex_init(&vdev->intp_mutex);
 
     trace_vfio_platform_realize(vbasedev->sysfsdev ?
@@ -659,8 +655,12 @@ static Property vfio_platform_dev_properties[] = {
 static void vfio_platform_instance_init(Object *obj)
 {
     VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(obj);
+    VFIODevice *vbasedev = &vdev->vbasedev;
 
-    vdev->vbasedev.fd = -1;
+    vbasedev->type = VFIO_DEVICE_TYPE_PLATFORM;
+    vbasedev->ops = &vfio_platform_ops;
+    vbasedev->dev = DEVICE(vdev);
+    vbasedev->fd = -1;
 }
 
 #ifdef CONFIG_IOMMUFD