staging: omap-thermal: make a omap_bandgap_power with only one exit point

Change the way the omap_bandgap_power is written so that it has only
one exit entry (Documentation/CodingStyle).
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/omap-thermal/omap-bandgap.c

@@ -91,12 +91,13 @@ static int omap_bandgap_power(struct omap_bandgap *bg_ptr, bool on)
 	int i;
 
 	if (!OMAP_BANDGAP_HAS(bg_ptr, POWER_SWITCH))
-		return 0;
+		goto exit;
 
 	for (i = 0; i < bg_ptr->conf->sensor_count; i++)
 		/* active on 0 */
 		RMW_BITS(bg_ptr, i, temp_sensor_ctrl, bgap_tempsoff_mask, !on);
 
+exit:
 	return 0;
 }