cfg80211: fix memory leak of wiphy device name

commit 4f488fb upstream.

In wiphy_new_nm(), if an error occurs after dev_set_name() and
device_initialize() have already been called, it's necessary to call
put_device() (via wiphy_free()) to avoid a memory leak.

Reported-by: [email protected]
Fixes: 1f87f7d ("cfg80211: add rfkill support")
Cc: [email protected]
Signed-off-by: Eric Biggers <[email protected]>
Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: ebiggers

net/wireless/core.c

@@ -478,7 +478,7 @@ struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv,
 				   &rdev->rfkill_ops, rdev);
 
 	if (!rdev->rfkill) {
-		kfree(rdev);
+		wiphy_free(&rdev->wiphy);
 		return NULL;
 	}