diff --git a/block/blk-core.c b/block/blk-core.c
index 77b99bf16c83..bdb906bbfe19 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -881,6 +881,7 @@ blk_init_allocated_queue(struct request_queue *q, request_fn_proc *rfn,
 
 fail:
 	blk_free_flush_queue(q->fq);
+	q->fq = NULL;
 	return NULL;
 }
 EXPORT_SYMBOL(blk_init_allocated_queue);