From: Jing Xiangfeng jingxiangfeng@huawei.com
commit 7ba08e81cb4aec9724ab7674a5de49e7a341062c upstream.
Fix to return the variable "err" from the error handling case instead of "ret".
Fixes: 94abbccdf291 ("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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/vdpa/mlx5/core/mr.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
--- a/drivers/vdpa/mlx5/core/mr.c +++ b/drivers/vdpa/mlx5/core/mr.c @@ -239,7 +239,6 @@ static int map_direct_mr(struct mlx5_vdp 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_vdp 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);