wifi: iwlwifi: mvm: Use the SMPS cfg of the correct link

The exiting code is checking the SMPS mode of deflink.
Use the SMPS mode of the link_sta function parameter.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240512072733.f3e2834e78f5.Ie24b431a6ad0dbf977afbbd4d2116bfe2426a0d5@changeid


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