drm/vmwgfx: Use list_move_tail instead of list_del/list_add_tail in vmwgfx_cmdbuf_res.c

Using list_move_tail() instead of list_del() + list_add_tail() in vmwgfx_cmdbuf_res.c.

Reported-by: Hulk Robot <[e-mail]>
Signed-off-by: Baokun Li <[e-mail]>
Signed-off-by: Zack Rusin <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c

···
 		case VMW_CMDBUF_RES_DEL:
 			ret = drm_ht_insert_item(&entry->man->resources, &entry->hash);
 			BUG_ON(ret);
-			list_del(&entry->head);
-			list_add_tail(&entry->head, &entry->man->list);
+			list_move_tail(&entry->head, &entry->man->list);
 			entry->state = VMW_CMDBUF_RES_COMMITTED;
 			break;
 		default: