linux-kernel - [PATCH][next] RDMA/mlx5: Fix missing assignment of rc when calling mlx5_ib_dereg

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Date:   Tue, 16 Mar 2021 09:51:17 +0000
From:   Colin King <colin.king@...onical.com>
To:     Leon Romanovsky <leon@...nel.org>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>, linux-rdma@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][next] RDMA/mlx5: Fix missing assignment of rc when calling mlx5_ib_dereg_mr

From: Colin Ian King <colin.king@...onical.com>

The assignment of the return code to rc when calling mlx5_ib_dereg_mr is
missing and there is an error check on an uninitialized rc. Fix this by
adding in the assignment.

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: e6fb246ccafb ("RDMA/mlx5: Consolidate MR destruction to mlx5_ib_dereg_mr()")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/infiniband/hw/mlx5/mr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 86ffc7e5ef96..9dcb9fb4eeaa 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -1946,7 +1946,7 @@ int mlx5_ib_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata)
 			mr->mtt_mr = NULL;
 		}
 		if (mr->klm_mr) {
-			mlx5_ib_dereg_mr(&mr->klm_mr->ibmr, NULL);
+			rc = mlx5_ib_dereg_mr(&mr->klm_mr->ibmr, NULL);
 			if (rc)
 				return rc;
 			mr->klm_mr = NULL;
-- 
2.30.2