wifi: iwlwifi: mvm: use correct key iteration

In the cases changed here, key iteration isn't done from
an RCU critical section, but rather using the wiphy lock
as protection. Therefore, just use ieee80211_iter_keys().
The link switch case can therefore also use sync commands.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20240729201718.69a2d18580c1.I2148e04d4b467d0b100beac8f7e449bfaaf775a5@changeid


Signed-off-by: Johannes Berg <johannes.berg@intel.com>