iommu/amd: Make call-sites of get_device_id aware of its return value

This patch is to make the call-sites of get_device_id aware of its
return value.

Signed-off-by: Wan Zongshun <Vincent.Wan@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
1 file changed