ima: fix reference leak in asymmetric_verify()
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 v5.16.10 by commit 89f586d3398f4cc0432ed870949dffb702940754, it was introduced in version v5.13 by commit 947d70597236dd5ae65c1f68c8eabfb962ee5a6b. For more details please see the references link.