configfs: fix possible memory leak in configfscreatedir()
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.0.16 by commit 8bc77754224a2c8581727ffe2e958119b4e27c8f, it was introduced in version v2.6.16 by commit 7063fbf2261194f72ee75afca67b3b38b554b5fa. For more details please see the references link.