wifi: iwlwifi: mvm: validate SAR GEO response payload size

wifi: iwlwifi: mvm: validate SAR GEO response payload size

The SAR GEO command response is cast to
iwl_geo_tx_power_profiles_resp without verifying the payload length.
A malformed or unexpected firmware response can lead to reading an
invalid structure layout.

Add an explicit size check before accessing the response data and
return -EIO when the payload size is wrong.

Fixes: f604324eefec ("iwlwifi: remove iwl_validate_sar_geo_profile() export")
Signed-off-by: Pagadala Yesu Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260715215523.7e749b7d374a.I4ef54548bff6c6e7c7a57bee771ac12508aad677@changeid