KVM: SVM: Do not terminate SEV-ES guests on GHCB validation failure
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1961151
SEV-ES guest can be crashed from userspace by issuing VMGEXIT instruction, fix that.
Signed-off-by: Vitaly Kuznetsov vkuznets@redhat.com