[PATCH 4/4] nvmet-loop: fix possible leakage during error flow

[Max Gurtovoy]

During nvme_loop_queue_rq error flow, one must call nvme_cleanup_cmd since
it's symmetric to nvme_setup_cmd.

Signed-off-by: Max Gurtovoy <m...@mellanox.com>
---
 drivers/nvme/target/loop.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index 0940c50..7b857c3 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -157,8 +157,10 @@ static blk_status_t nvme_loop_queue_rq(struct 
blk_mq_hw_ctx *hctx,
                iod->sg_table.sgl = iod->first_sgl;
                if (sg_alloc_table_chained(&iod->sg_table,
                                blk_rq_nr_phys_segments(req),
-                               iod->sg_table.sgl, SG_CHUNK_SIZE))
+                               iod->sg_table.sgl, SG_CHUNK_SIZE)) {
+                       nvme_cleanup_cmd(req);
                        return BLK_STS_RESOURCE;
+               }
 
                iod->req.sg = iod->sg_table.sgl;
                iod->req.sg_cnt = blk_rq_map_sg(req->q, req, iod->sg_table.sgl);
-- 
1.8.3.1