We can't assume this device exists, fall back to the bridge itself.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>
Tested-by: NMatthew Thode <prometheanfire@gentoo.org>
Cc: stable@vger.kernel.org
Signed-off-by: NJoerg Roedel <joro@8bytes.org>