powerpc/xics: fix refcount leak in icpopalinit()
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 v4.19.247 by commit 1d5c8cea85fb1680eae8d645b96b92146cb4633c. For more details please see the references link.