net/mlx5e: Fix actions_match_supported() return

The actions_match_supported() function returns a bool, true for success
and false for failure.  This error path is returning a negative which
is cast to true but it should return false.

Fixes: 4c3844d9 ("net/mlx5e: CT: Introduce connection tracking")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

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

@@ -3057,7 +3057,7 @@ static bool actions_match_supported(struct mlx5e_priv *priv,
 			 */
 			NL_SET_ERR_MSG_MOD(extack,
 					   "Can't offload mirroring with action ct");
-			return -EOPNOTSUPP;
+			return false;
 		}
 	} else {
 		actions = flow->nic_attr->action;