Release bip using kfree() in error path when that was allocated
by kmalloc().

Signed-off-by: Chengguang Xu <redacted>
---
 block/bio-integrity.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/block/bio-integrity.c b/block/bio-integrity.c
index 23632a33ed39..538c8dc8840a 100644
--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c

@@ -78,7 +78,11 @@ struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio,
 
 	return bip;
 err:
-	mempool_free(bip, &bs->bio_integrity_pool);
+	if (bs && mempool_initialized(&bs->bio_integrity_pool))
+		mempool_free(bip, &bs->bio_integrity_pool);
+	else
+		kfree(bip);
+
 	return ERR_PTR(-ENOMEM);