We were passing a NULL error pointer to the object_property_set_bool()
call that realizes the CPU object. This meant that we wouldn't detect
failure, and would plough blindly on to crash later trying to use a
NULL CPU object pointer. Detect errors and fail instead.

In particular, this will be necessary to detect the user error
of using "-cpu host" without "-enable-kvm" once we make the host
CPU type be registered unconditionally rather than only in
kvm_arch_init().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/virt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index a4537af..b334c82 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -1404,7 +1404,7 @@ static void machvirt_init(MachineState *machine)
                                      "secure-memory", &error_abort);
         }
 
-        object_property_set_bool(cpuobj, true, "realized", NULL);
+        object_property_set_bool(cpuobj, true, "realized", &error_fatal);
         object_unref(cpuobj);
     }
     fdt_add_timer_nodes(vms);
-- 
2.7.4