net/mlx5e: Err if asked to mirror a goto chain tc eswitch rule
Currently we are not supporting this and not err-ing on that either.
For now, just err if asked to do that.
Fixes: bf07aa730a04 ('net/mlx5e: Support offloading tc priorities and chains for eswitch flows') Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reported-by: Eli Britstein <elibr@mellanox.com> Reviewed-by: Eli Britstein <elibr@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>