hw/intc/riscv_aplic: APLICs should add child earlier than realize

Since only root APLICs can have hw IRQ lines, aplic->parent should
be initialized first.

Fixes: e8f7934 ("hw/intc: Add RISC-V AIA APLIC device emulation")
Reviewed-by: Daniel Henrique Barboza <[email protected]>
Signed-off-by: yang.zhang <[email protected]>
Cc: qemu-stable <[email protected]>
Message-ID: <[email protected]>
Signed-off-by: Alistair Francis <[email protected]>
(cherry picked from commit c76b121)
Signed-off-by: Michael Tokarev <[email protected]>

Author: zhangyang-hxd

hw/intc/riscv_aplic.c

@@ -1000,16 +1000,16 @@ DeviceState *riscv_aplic_create(hwaddr addr, hwaddr size,
     qdev_prop_set_bit(dev, "msimode", msimode);
     qdev_prop_set_bit(dev, "mmode", mmode);
 
+    if (parent) {
+        riscv_aplic_add_child(parent, dev);
+    }
+
     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
 
     if (!is_kvm_aia(msimode)) {
         sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, addr);
     }
 
-    if (parent) {
-        riscv_aplic_add_child(parent, dev);
-    }
-
     if (!msimode) {
         for (i = 0; i < num_harts; i++) {
             CPUState *cpu = cpu_by_arch_id(hartid_base + i);