net/mlx5: fix modify port action validation

[ upstream commit ea7cc15ab97a3f73ae4f6c0a9d9c89f5ca0374f3 ]

Certain flow rules containing a modify header action for an L4 port
could be erroneously rejected as invalid, because this action
was counted as consuming two HW actions, while it only requires one.

Fixes: 72a944d ("net/mlx5: fix header modify action validation")

Signed-off-by: Dmitry Kozlyuk <dkozlyuk@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>

drivers/net/mlx5/mlx5_flow.h

@@ -335,7 +335,7 @@ enum mlx5_feature_name {
 #define MLX5_ACT_NUM_MDF_IPV6		4
 #define MLX5_ACT_NUM_MDF_MAC		2
 #define MLX5_ACT_NUM_MDF_VID		1
-#define MLX5_ACT_NUM_MDF_PORT		2
+#define MLX5_ACT_NUM_MDF_PORT		1
 #define MLX5_ACT_NUM_MDF_TTL		1
 #define MLX5_ACT_NUM_DEC_TTL		MLX5_ACT_NUM_MDF_TTL
 #define MLX5_ACT_NUM_MDF_TCPSEQ		1