thermal: core: remove a couple of style issues on helpers

Reorganizing the code of helper functions to improve
readability and style, as recommended by checkpatch.pl.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

drivers/thermal/thermal_core.c

@@ -248,7 +248,8 @@ int get_tz_trend(struct thermal_zone_device *tz, int trip)
 }
 EXPORT_SYMBOL(get_tz_trend);
 
-struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz,
+struct thermal_instance *
+get_thermal_instance(struct thermal_zone_device *tz,
 		     struct thermal_cooling_device *cdev, int trip)
 {
 	struct thermal_instance *pos = NULL;