iommu/amd: Rename dma_ops_domain->next_address to next_index

It points to the next aperture index to allocate from. We
don't need the full address anymore because this is now
tracked in struct aperture_range.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2015-12-21 18:11:32 +01:00
commit ebaecb423b