Make AddressSpaces QOM objects to ensure that they are destroyed when
their owners are finalized and also to get a unique path for debugging
output.

The name arguments were used to distinguish AddresSpaces in debugging
output, but they will represent property names after QOM-ification and
debugging output will show QOM paths. So change them to make them more
concise and also avoid conflicts with other properties.

Signed-off-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>
---
 hw/nubus/nubus-bus.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/nubus/nubus-bus.c b/hw/nubus/nubus-bus.c
index 1d553be77662..75767c9fc399 100644
--- a/hw/nubus/nubus-bus.c
+++ b/hw/nubus/nubus-bus.c
@@ -82,7 +82,7 @@ static void nubus_unrealize(BusState *bus)
 {
     NubusBus *nubus = NUBUS_BUS(bus);
 
-    address_space_destroy(&nubus->nubus_as);
+    object_unparent(OBJECT(&nubus->nubus_as));
 }
 
 static void nubus_realize(BusState *bus, Error **errp)
@@ -94,7 +94,7 @@ static void nubus_realize(BusState *bus, Error **errp)
         return;
     }
 
-    address_space_init(&nubus->nubus_as, NULL, &nubus->nubus_mr, "nubus");
+    address_space_init(&nubus->nubus_as, OBJECT(nubus), &nubus->nubus_mr, "as");
 }
 
 static void nubus_init(Object *obj)

-- 
2.51.0