diff --git a/drivers/media/platform/mediatek/vcodec/vdec_msg_queue.c b/drivers/media/platform/mediatek/vcodec/vdec_msg_queue.c
index 03f8d7cd8edd..675f62814f94 100644
--- a/drivers/media/platform/mediatek/vcodec/vdec_msg_queue.c
+++ b/drivers/media/platform/mediatek/vcodec/vdec_msg_queue.c
@@ -246,6 +246,7 @@ void vdec_msg_queue_deinit(struct vdec_msg_queue *msg_queue,
 			mtk_vcodec_mem_free(ctx, mem);
 
 		kfree(lat_buf->private_data);
+		lat_buf->private_data = NULL;
 	}
 }