IB/mlx5: Enable TX on a DEVX flow table

Flow table can be passed as a DEVX object which is a valid destination in
an EGRESS flow. Fix the original code to allow that.

Fixes: a7ee18bd ("RDMA/mlx5: Allow creating a matcher for a NIC TX flow table")
Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/mlx5/flow.c

@@ -93,10 +93,6 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
 	    ((dest_devx && dest_qp) || (!dest_devx && !dest_qp)))
 		return -EINVAL;
 
-	if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS &&
-	    (dest_devx || dest_qp))
-		return -EINVAL;
-
 	if (dest_devx) {
 		devx_obj = uverbs_attr_get_obj(
 			attrs, MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
@@ -141,6 +137,10 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
 	if (dev->rep)
 		return -ENOTSUPP;
 
+	if (dest_type == MLX5_FLOW_DESTINATION_TYPE_TIR &&
+	    fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS)
+		return -EINVAL;
+
 	cmd_in = uverbs_attr_get_alloced_ptr(
 		attrs, MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
 	inlen = uverbs_attr_get_len(attrs,