x86/hyperv: Fix NULL deref in sethvtscchange_cb() if Hyper-V setup fails
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 v5.4.162 by commit b0e44dfb4e4c699cca33ede431b8d127e6e8d661, it was introduced in version v4.16 by commit 93286261de1b46339aa27cd4c639b21778f6cade. For more details please see the references link.