Follow the same style in mem freq init as in fsb freq init, returning
the value instead of assigning in multiple places.
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/f098ccdbb0c42016d5dad81e0b089bb4babe29f0.1718356614.git.jani.nikula@intel.comSigned-off-by: Jani Nikula <jani.nikula@intel.com>