diff --git a/hw/sun4m.c b/hw/sun4m.c
index 4954ba37da..c810b35984 100644
--- a/hw/sun4m.c
+++ b/hw/sun4m.c
@@ -510,11 +510,11 @@ static void ram_init(target_phys_addr_t addr, ram_addr_t RAM_size,
         exit(1);
     }
     dev = qdev_create(NULL, "memory");
-    qdev_init(dev);
     s = sysbus_from_qdev(dev);
 
     d = FROM_SYSBUS(RamDevice, s);
     d->size = RAM_size;
+    qdev_init(dev);
 
     sysbus_mmio_map(s, 0, addr);
 }