powerpc/fslrio: Fix refcount leak in fslrio_setup
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 v5.10.121 by commit 46fd994763cf6884b88a2da712af918f3ed54d7b, it was introduced in version v3.3 by commit abc3aeae3aaa5c319d02f12649e17ea5929999aa. For more details please see the references link.