KVM: x86: nSVM: leave nested mode on vCPU free

commit 917401f2 upstream.

If the VM was terminated while nested, we free the nested state
while the vCPU still is in nested mode.

Soon a warning will be added for this condition.

Cc: stable@vger.kernel.org
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20221103141351.50662-2-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>