diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index b281482ab8c8..8484be0fe224 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -638,8 +638,10 @@ static int mtk_drm_bind(struct device *dev)
 	private->mtk_drm_bound = true;
 	private->dev = dev;
 
-	if (!mtk_drm_get_all_drm_priv(dev))
+	if (!mtk_drm_get_all_drm_priv(dev)) {
+		put_device(private->mutex_dev);
 		return 0;
+	}
 
 	drm = drm_dev_alloc(&mtk_drm_driver, dev);
 	if (IS_ERR(drm)) {