md: Don't set mddev private to NULL in raid0 pers->free
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 v5.15.46 by commit f63fd1e0e0fc158023cc67ea6a07e278019061ba, it was introduced in version v5.15.17 by commit 00e3d58f50a875343124bcf5a9637520a492b0d1. For more details please see the references link.