wifi: iwlwifi: mvm: declare band variable in the scope

band is not used outside of the for loop, declare it inside it.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Link: https://msgid.link/20240527190228.b634d184980a.I9d9e71125f9a77ba4f9a33a7a2ff1e8e78e17767@changeid


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