iommu/amd: Small cleanup in mn_release()

"pasid_state->device_state" and "dev_state" are the same, but it's nicer
to use dev_state consistently.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
1 file changed