diff --git a/drivers/mtd/mtdsuper.c b/drivers/mtd/mtdsuper.c
index c709ff7aa6b5..02eede3fe582 100644
--- a/drivers/mtd/mtdsuper.c
+++ b/drivers/mtd/mtdsuper.c
@@ -31,8 +31,10 @@ static int mtd_get_sb(struct fs_context *fc,
 	int ret;
 
 	sb = sget_dev(fc, MKDEV(MTD_BLOCK_MAJOR, mtd->index));
-	if (IS_ERR(sb))
+	if (IS_ERR(sb)) {
+		put_mtd_device(mtd);
 		return PTR_ERR(sb);
+	}
 
 	if (sb->s_root) {
 		/* new mountpoint for an already mounted superblock */