common/mlx5: fix MAC addresses flush

common/mlx5: fix MAC addresses flush

mlx5_nl_mac_addr_flush should flush all allocated MAC
addresses.

The MAC addresses array size should be of size
MLX5_MAX_MAC_ADDRESSES, but currently we return without
flushing the addresses if size is MLX5_MAX_MAC_ADDRESSES.

This was fixed by not allowing an array larger than
MLX5_MAX_MAC_ADDRESSES.

Fixes: e9a8ac59b6e2 ("common/mlx5: fix MAC addresses assert")
Cc: stable@dpdk.org
Signed-off-by: Shiri Kuzin <shirik@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>