KVM: VMX: Fix locking order in handle_invalid_guest_state

Release and re-acquire preemption and IRQ lock in the same order as
vcpu_enter_guest does.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>