[PATCH] mlx5: vdpa: fix possible uninitialized var

[Jason Wang]

Upstream: posted

When compiling with -Werror=maybe-uninitialized, gcc may complains the
possible uninitialized umem. Fix that.

Signed-off-by: Jason Wang <jasow...@redhat.com>
---
 drivers/vdpa/mlx5/net/mlx5_vnet.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c 
b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index f1d54814db97..a6ad83d8d8e2 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -706,6 +706,9 @@ static void umem_destroy(struct mlx5_vdpa_net *ndev, struct 
mlx5_vdpa_virtqueue
        case 3:
                umem = &mvq->umem3;
                break;
+       default:
+               WARN(1, "unsupported umem num %d\n", num);
+               return;
        }
 
        MLX5_SET(destroy_umem_in, in, opcode, MLX5_CMD_OP_DESTROY_UMEM);
-- 
2.25.1