powerpc/xics: fix refcount leak in icp_opal_init()
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 v5.4.198 by commit 537a317e5ff45d1f5a0ecaf6a0d7c8043c878cb1. For more details please see the references link.