[PATCH 4.14 75/89] dm crypt: fix error return code in crypt_ctr()

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Wei Yongjun <weiyongjun1@xxxxxxxxxx>

commit 3cc2e57c4beabcbbaa46e1ac6d77ca8276a4a42d upstream.

Fix to return error code -ENOMEM from the mempool_create_kmalloc_pool()
error handling case instead of 0, as done elsewhere in this function.

Fixes: ef43aa38063a6 ("dm crypt: add cryptographic data integrity protection (authenticated encryption)")
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/md/dm-crypt.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -2746,6 +2746,7 @@ static int crypt_ctr(struct dm_target *t
 			cc->tag_pool_max_sectors * cc->on_disk_tag_size);
 		if (!cc->tag_pool) {
 			ti->error = "Cannot allocate integrity tags mempool";
+			ret = -ENOMEM;
 			goto bad;
 		}