treewide: remove extra semicolons

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/power/intel_mid_battery.c b/drivers/power/intel_mid_battery.c
index bce3a01..cffcb7c 100644
--- a/drivers/power/intel_mid_battery.c
+++ b/drivers/power/intel_mid_battery.c
@@ -522,7 +522,7 @@
 	if (retval) {
 		dev_warn(pbi->dev, "%s(): ipc pmic read failed\n",
 								__func__);
-		return retval;;
+		return retval;
 	}
 
 	return 0;