kvm/ioapic: dump real object instead of a fake one

When we do "info ioapic" for kvm ioapic, we were building up a temporary
ioapic object. Let's fetch the real one and update correspond to the
real object as well.

This fixes printing uninitialized version field in
ioapic_print_redtbl().

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1486106298-3699-2-git-send-email-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/i386/kvm/ioapic.c

@@ -114,11 +114,11 @@ static void kvm_ioapic_put(IOAPICCommonState *s)
 
 void kvm_ioapic_dump_state(Monitor *mon, const QDict *qdict)
 {
-    IOAPICCommonState s;
+    IOAPICCommonState *s = IOAPIC_COMMON(object_resolve_path("ioapic", NULL));
 
-    kvm_ioapic_get(&s);
-
-    ioapic_print_redtbl(mon, &s);
+    assert(s);
+    kvm_ioapic_get(s);
+    ioapic_print_redtbl(mon, s);
 }
 
 static void kvm_ioapic_reset(DeviceState *dev)