iwlwifi: remove redundant iwl_finish_nic_init() argument

iwlwifi: remove redundant iwl_finish_nic_init() argument

We don't need this argument, since in all cases where the
function is called, trans->trans_cfg is already set (it's
in fact set during allocation). Remove it to avoid any
confusion about it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211017162352.cb04580b8521.I7129d4ba3dc689af839761d5807a10f99718893e@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>