iommu/amd: Skip attach device domain is same as new domain

If device->domain is same as new domain then we can skip the
device attach process.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20230215052642.6016-2-vasant.hegde@amd.com


Signed-off-by: Joerg Roedel <jroedel@suse.de>