Memory region is created in instance_init(), merge it into function
realize(). There is no special class_init() for loongarch_pch object.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
---
 hw/intc/loongarch_pch_pic.c | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/hw/intc/loongarch_pch_pic.c b/hw/intc/loongarch_pch_pic.c
index 6a87b1aab7..ea87851994 100644
--- a/hw/intc/loongarch_pch_pic.c
+++ b/hw/intc/loongarch_pch_pic.c
@@ -382,6 +382,7 @@ static void loongarch_pch_pic_reset(DeviceState *d)
 static void loongarch_pch_pic_realize(DeviceState *dev, Error **errp)
 {
     LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(dev);
+    SysBusDevice *sbd  = SYS_BUS_DEVICE(dev);
 
     if (!s->irq_num || s->irq_num  > VIRT_PCH_PIC_IRQ_NUM) {
         error_setg(errp, "Invalid 'pic_irq_num'");
@@ -390,19 +391,12 @@ static void loongarch_pch_pic_realize(DeviceState *dev, Error **errp)
 
     qdev_init_gpio_out(dev, s->parent_irq, s->irq_num);
     qdev_init_gpio_in(dev, pch_pic_irq_handler, s->irq_num);
-}
-
-static void loongarch_pch_pic_init(Object *obj)
-{
-    LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(obj);
-    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
-
-    memory_region_init_io(&s->iomem32_low, obj,
+    memory_region_init_io(&s->iomem32_low, OBJECT(dev),
                           &loongarch_pch_pic_reg32_low_ops,
                           s, PCH_PIC_NAME(.reg32_part1), 0x100);
-    memory_region_init_io(&s->iomem8, obj, &loongarch_pch_pic_reg8_ops,
+    memory_region_init_io(&s->iomem8, OBJECT(dev), &loongarch_pch_pic_reg8_ops,
                           s, PCH_PIC_NAME(.reg8), 0x2a0);
-    memory_region_init_io(&s->iomem32_high, obj,
+    memory_region_init_io(&s->iomem32_high, OBJECT(dev),
                           &loongarch_pch_pic_reg32_high_ops,
                           s, PCH_PIC_NAME(.reg32_part2), 0xc60);
     sysbus_init_mmio(sbd, &s->iomem32_low);
@@ -451,7 +445,6 @@ static const TypeInfo loongarch_pch_pic_info = {
     .name          = TYPE_LOONGARCH_PCH_PIC,
     .parent        = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(LoongArchPCHPIC),
-    .instance_init = loongarch_pch_pic_init,
     .class_init    = loongarch_pch_pic_class_init,
 };
 
-- 
2.43.5