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vdpa/mlx5: Fix error return in map_direct_mr()

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Fix to return the variable "err" from the error handling case instead
of "ret".

Fixes: 94abbccdf2 ("vdpa/mlx5: Add shared memory registration code")
Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Link: https://lore.kernel.org/r/20201026070637.164321-1-jingxiangfeng@huawei.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Eli Cohen <elic@nvidia.com>
Cc: stable@vger.kernel.org
Acked-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Jing Xiangfeng 2020-10-26 15:06:37 +08:00 committed by Michael S. Tsirkin
parent 7922460e33
commit 7ba08e81cb
1 changed files with 2 additions and 3 deletions
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5
drivers/vdpa/mlx5/core/mr.c
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@ -239,7 +239,6 @@ static int map_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_direct_mr
u64 paend;
struct scatterlist *sg;
struct device *dma = mvdev->mdev->device;
int ret;
for (map = vhost_iotlb_itree_first(iotlb, mr->start, mr->end - 1);
map; map = vhost_iotlb_itree_next(map, start, mr->end - 1)) {
@ -277,8 +276,8 @@ static int map_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_direct_mr
done:
mr->log_size = log_entity_size;
mr->nsg = nsg;
ret = dma_map_sg_attrs(dma, mr->sg_head.sgl, mr->nsg, DMA_BIDIRECTIONAL, 0);
if (!ret)
err = dma_map_sg_attrs(dma, mr->sg_head.sgl, mr->nsg, DMA_BIDIRECTIONAL, 0);
if (!err)
goto err_map;
err = create_direct_mr(mvdev, mr);