net/mlx5: Fix RDMA TX steering prio

User added steering rules at RDMA_TX were being added to the first prio,
which is the counters prio.
Fix that so that they are correctly added to the BYPASS_PRIO instead.

Fixes: 24670b1 ("net/mlx5: Add support for RDMA TX steering")
Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/mellanox/mlx5/core/fs_core.c

@@ -2709,6 +2709,7 @@ struct mlx5_flow_namespace *mlx5_get_flow_namespace(struct mlx5_core_dev *dev,
 		break;
 	case MLX5_FLOW_NAMESPACE_RDMA_TX:
 		root_ns = steering->rdma_tx_root_ns;
+		prio = RDMA_TX_BYPASS_PRIO;
 		break;
 	case MLX5_FLOW_NAMESPACE_RDMA_RX_COUNTERS:
 		root_ns = steering->rdma_rx_root_ns;