[PATCH] hwmon/coretemp: Fix a memory leak bug

[Wenwen Wang]

In coretemp_init(), 'zone_devices' is allocated through kcalloc(). However,
it is not deallocated in the following execution if
platform_driver_register() fails, leading to a memory leak. To fix this
issue, introduce the 'outzone' label to free 'zone_devices' before
returning the error.

Signed-off-by: Wenwen Wang <wenwen@xxxxxxxxxx>
---
 drivers/hwmon/coretemp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index fe6618e..d855c78 100644
--- a/drivers/hwmon/coretemp.c
+++ b/drivers/hwmon/coretemp.c
@@ -736,7 +736,7 @@ static int __init coretemp_init(void)
 
 	err = platform_driver_register(&coretemp_driver);
 	if (err)
-		return err;
+		goto outzone;
 
 	err = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "hwmon/coretemp:online",
 				coretemp_cpu_online, coretemp_cpu_offline);
@@ -747,6 +747,7 @@ static int __init coretemp_init(void)
 
 outdrv:
 	platform_driver_unregister(&coretemp_driver);
+outzone:
 	kfree(zone_devices);
 	return err;
 }
-- 
2.7.4