ipmi: fix memleak when unload ipmi driver
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 v5.10.163 by commit c69bc8e34df4fc5db06e0b4a9a9ffffb1b241436. For more details please see the references link.