perf: Fix possible memleak in pmudevalloc()
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 v5.15.86 by commit f790dfe81629544dd327893c9b04b0a0fdeda2fa, it was introduced in version v2.6.38 by commit abe43400579d5de0078c2d3a760e6598e183f871. For more details please see the references link.