spapr_pci: Drop some dead error handling
chassis_from_bus() uses object_property_get_uint() to get property "chassis_nr" of the bridge device. Failure would be a programming error. Pass &error_abort, and simplify its callers. Cc: David Gibson <david@gibson.dropbear.id.au> Cc: qemu-ppc@nongnu.org Signed-off-by: NMarkus Armbruster <armbru@redhat.com> Acked-by: NDavid Gibson <david@gibson.dropbear.id.au> Reviewed-by: NGreg Kurz <groug@kaod.org> Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Message-Id: <20200505152926.18877-18-armbru@redhat.com>
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