The KVM MMU caches already guarantee that shadow page table memory will
be zeroed, so there is no reason to re-zero the page in the TDP MMU page
fault handler.

No functional change intended.
Reviewed-by: NPeter Feiner <pfeiner@google.com>
Reviewed-by: NSean Christopherson <seanjc@google.com>
Acked-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NBen Gardon <bgardon@google.com>
Message-Id: <20210202185734.1680553-5-bgardon@google.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>