diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c
index 866933fc8426..533b8948918c 100644
--- a/drivers/mtd/mtdswap.c
+++ b/drivers/mtd/mtdswap.c
@@ -1450,6 +1450,7 @@ static void mtdswap_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 
 debugfs_failed:
 	del_mtd_blktrans_dev(mbd_dev);
+	mbd_dev = NULL;
 
 cleanup:
 	mtdswap_cleanup(d);