drm/i915: Don't hide function calls with side effects

Hiding a function call with side effects inside the
variable declaration block is a bit rude. Make it
stand out more.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230214134739.25077-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>