integrity: Fix memory leakage in keyring allocation error path
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 v5.10.163 by commit 3bd737289c26be3cee4b9afaf61ef784a2af9d6e, it was introduced in version v4.12 by commit 2b6aa412ff23a02ac777ad307249c60a839cfd25. For more details please see the references link.