kvm: x86: Do proper cleanup if kvm_x86_ops->vm_init() fails

If vm_init() fails [which can happen, for instance, if a memory
allocation fails during avic_vm_init()], we need to cleanup some
state in order to avoid resource leaks.

Signed-off-by: Junaid Shahid <junaids@google.com>
Link: https://lore.kernel.org/r/20220729224329.323378-1-junaids@google.com


Signed-off-by: Sean Christopherson <seanjc@google.com>