Warn if value of qdev_init() isn't checked After qdev_init() fails, the device is gone. Failure to check runs a high risk of use-after-free. Patchworks-ID: 35166 Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>