drivers: ethernet: fix adin set_config

	const struct device *adin = cfg->adin;

	int ret = -ENOTSUP;

	(void)eth_adin2111_lock(dev, K_FOREVER);

	if (type == ETHERNET_CONFIG_TYPE_MAC_ADDRESS) {

		ret = adin2111_filter_unicast(adin, data->mac_addr, cfg->port_idx);

		ret = adin2111_filter_unicast(adin, (uint8_t *)&config->mac_address.addr[0],

					      cfg->port_idx);

		if (ret < 0) {

			return ret;

			goto end_unlock;

		}

		memcpy(data->mac_addr, config->mac_address.addr, sizeof(data->mac_addr));

		(void)memcpy(data->mac_addr, config->mac_address.addr, sizeof(data->mac_addr));

		net_if_set_link_addr(data->iface, data->mac_addr,

				     sizeof(data->mac_addr),

		(void)net_if_set_link_addr(data->iface, data->mac_addr, sizeof(data->mac_addr),

					   NET_LINK_ETHERNET);

	}

end_unlock:

	(void)eth_adin2111_unlock(dev);

	return ret;

}