selftests/powerpc: Fix resource leaks
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 v4.9.337 by commit 81a61f339655a6b6679ff63bf6c849873a249a7d, it was introduced in version v4.2 by commit ebd5858c904b1c795f1511758a7ac043afd44438. For more details please see the references link.