KVM: arm64: Fix host stage-2 PGD refcount
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 by commit 1d58a17ef54599506d44c45ac95be27273a4d2b1, it was introduced in version v5.13 by commit 1025c8c0c6accfcbdc8f52ca1940160f65cd87d6. For more details please see the references link.