bq27x00_battery: Add missing kfree(di->bus) in bq27x00_battery_remove()

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index 3ec9c6a..eff0273 100644
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -418,6 +418,7 @@
 
 	power_supply_unregister(&di->bat);
 
+	kfree(di->bus);
 	kfree(di->bat.name);
 
 	mutex_lock(&battery_mutex);