Re: [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 <redacted>
Reported-by: kernel test robot <redacted>
Reported-by: Dan Carpenter <redacted>
---
  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)