[PATCH v1] thermal: core: Fix thermal zone device registration error path

["Rafael J. Wysocki" <rafael@kernel.org>]

From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

If thermal_zone_device_register_with_trips() fails after registering
a thermal zone device, it needs to wait for the tz->removal completion
like thermal_zone_device_unregister(), in case user space has managed
to take a reference to the thermal zone device's kobject, in which case
thermal_release() may not be called by the error path itself and tz may
be freed prematurely.

Add the missing wait_for_completion() call to the thermal zone device
registration error path.

Fixes: 04e6ccfc93c5 ("thermal: core: Fix NULL pointer dereference in zone registration error path")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: All applicable <stable@vger.kernel.org>
---
 drivers/thermal/thermal_core.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -1651,6 +1651,7 @@ unregister:
 	device_del(&tz->device);
 release_device:
 	put_device(&tz->device);
+	wait_for_completion(&tz->removal);
 remove_id:
 	ida_free(&thermal_tz_ida, id);
 free_tzp: