diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index 49ac23d3e776c8c98b8884fde954fee4d0b3af02..d8ec44b194d64a012c1dff1472c233f83f1119b0 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -803,8 +803,8 @@ static int thermal_of_populate_trip(struct device_node *np,
  * otherwise, it returns a corresponding ERR_PTR(). Caller must
  * check the return value with help of IS_ERR() helper.
  */
-static struct __thermal_zone *
-thermal_of_build_thermal_zone(struct device_node *np)
+static struct __thermal_zone
+__init *thermal_of_build_thermal_zone(struct device_node *np)
 {
 	struct device_node *child = NULL, *gchild;
 	struct __thermal_zone *tz;