diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index e3387a74a9a2e63134512f7dd521266d61181115..d53a764b05eacde776a4454054795d1c0277d676 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -524,6 +524,7 @@ static int bt_alloc(struct blk_mq_bitmap_tags *bt, unsigned int depth,
 	bt->bs = kzalloc(BT_WAIT_QUEUES * sizeof(*bt->bs), GFP_KERNEL);
 	if (!bt->bs) {
 		kfree(bt->map);
+		bt->map = NULL;
 		return -ENOMEM;
 	}