netdev - [PATCH] vdpa/mlx5: Set err = -ENOMEM in case dma_map_sg

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Message-ID: <20210411083646.910546-1-elic@nvidia.com>
Date:   Sun, 11 Apr 2021 11:36:46 +0300
From:   Eli Cohen <elic@...dia.com>
To:     <mst@...hat.com>, <jasowang@...hat.com>, <si-wei.liu@...cle.com>,
        <virtualization@...ts.linux-foundation.org>,
        <netdev@...r.kernel.org>
CC:     <elic@...dia.com>, kernel test robot <lkp@...el.com>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: [PATCH] vdpa/mlx5: Set err = -ENOMEM in case dma_map_sg_attrs fails

Set err = -ENOMEM if dma_map_sg_attrs() fails so the function reutrns
error.

Fixes: 94abbccdf291 ("vdpa/mlx5: Add shared memory registration code")
Signed-off-by: Eli Cohen <elic@...dia.com>
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 drivers/vdpa/mlx5/core/mr.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/vdpa/mlx5/core/mr.c b/drivers/vdpa/mlx5/core/mr.c
index 3908ff28eec0..800cfd1967ad 100644
--- a/drivers/vdpa/mlx5/core/mr.c
+++ b/drivers/vdpa/mlx5/core/mr.c
@@ -278,8 +278,10 @@ static int map_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_direct_mr
 	mr->log_size = log_entity_size;
 	mr->nsg = nsg;
 	mr->nent = dma_map_sg_attrs(dma, mr->sg_head.sgl, mr->nsg, DMA_BIDIRECTIONAL, 0);
-	if (!mr->nent)
+	if (!mr->nent) {
+		err = -ENOMEM;
 		goto err_map;
+	}
 
 	err = create_direct_mr(mvdev, mr);
 	if (err)
-- 
2.30.1