SysBusDevice::mmio[] is kind of internal. Use the proper
sysbus_mmio_get_region() accessor.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/i386/kvm/ioapic.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/i386/kvm/ioapic.c b/hw/i386/kvm/ioapic.c
index 693ee978a12..0519432edbe 100644
--- a/hw/i386/kvm/ioapic.c
+++ b/hw/i386/kvm/ioapic.c
@@ -80,6 +80,7 @@ static void kvm_ioapic_put(IOAPICCommonState *s)
 {
     struct kvm_irqchip chip;
     struct kvm_ioapic_state *kioapic;
+    MemoryRegion *mr = sysbus_mmio_get_region(s->busdev, 0);
     int ret, i;
 
     chip.chip_id = KVM_IRQCHIP_IOAPIC;
@@ -87,7 +88,7 @@ static void kvm_ioapic_put(IOAPICCommonState *s)
 
     kioapic->id = s->id;
     kioapic->ioregsel = s->ioregsel;
-    kioapic->base_address = s->busdev.mmio[0].addr;
+    kioapic->base_address = mr->addr;
     kioapic->irr = s->irr;
     for (i = 0; i < IOAPIC_NUM_PINS; i++) {
         kioapic->redirtbl[i].bits = s->ioredtbl[i];
-- 
2.51.0