net/mlx5: Fix rt's type in dr_action_create_reformat_action

clang warns:

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c:1080:9:
warning: implicit conversion from enumeration type 'enum
mlx5_reformat_ctx_type' to different enumeration type 'enum
mlx5dr_action_type' [-Wenum-conversion]
                        rt = MLX5_REFORMAT_TYPE_L2_TO_L2_TUNNEL;
                           ~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c:1082:9:
warning: implicit conversion from enumeration type 'enum
mlx5_reformat_ctx_type' to different enumeration type 'enum
mlx5dr_action_type' [-Wenum-conversion]
                        rt = MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL;
                           ~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c:1084:51:
warning: implicit conversion from enumeration type 'enum
mlx5dr_action_type' to different enumeration type 'enum
mlx5_reformat_ctx_type' [-Wenum-conversion]
                ret = mlx5dr_cmd_create_reformat_ctx(dmn->mdev, rt, data_sz, data,
                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~            ^~
3 warnings generated.

Use the right type for rt, which is mlx5_reformat_ctx_type so there are
no warnings about mismatched types.

Fixes: 9db810ed ("net/mlx5: DR, Expose steering action functionality")
Link: https://github.com/ClangBuiltLinux/linux/issues/652Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reported-by: Austin Kim <austindh.kim@gmail.com>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c

@@ -1074,7 +1074,7 @@ dr_action_create_reformat_action(struct mlx5dr_domain *dmn,
 	case DR_ACTION_TYP_L2_TO_TNL_L2:
 	case DR_ACTION_TYP_L2_TO_TNL_L3:
 	{
-		enum mlx5dr_action_type rt;
+		enum mlx5_reformat_ctx_type rt;
 
 		if (action->action_type == DR_ACTION_TYP_L2_TO_TNL_L2)
 			rt = MLX5_REFORMAT_TYPE_L2_TO_L2_TUNNEL;