SUNRPC: Fix null-ptr-deref when xps sysfs alloc 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 v5.15.78 by commit d59722d088a9d86ce6d9d39979e5d1d669d249f7, it was introduced in version v5.14 by commit 2a338a543163ad6b42f4732396249cea6d3a33c8. For more details please see the references link.