drivers:md:fix a potential use-after-free bug
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 v4.19.256 by commit e5b3dd2d92c4511e81f6e4ec9c5bb7ad25e03d13. For more details please see the references link.