[PATCH] vdpa/mlx5: Set err = -ENOMEM in case dma_map_sg_attrs fails

[Eli Cohen]

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 <e...@nvidia.com>
Reported-by: kernel test robot <l...@intel.com>
Reported-by: Dan Carpenter <dan.carpen...@oracle.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