blk-mq: fix possible memleak when register 'hctx' failed
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 e8022da1fa2fdf2fa204b445dd3354e7a66d085a. For more details please see the references link.