wifi: iwlwifi: pcie: get_crf_id() can be void

This never returns an error and the return value is never
checked anyway, so it can just be void.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20231207044813.898b7e99206f.I61378115093fe70e6f5baca7f334651e4190eb3b@changeid


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