dma-mapping: remove p2p support from SG mapping routine

After commit 94ce55046c36 ("nvme-pci: convert metadata mapping to dma iter"),
there are no in-kernel users who perform DMA mapping over SG to enable p2p
transfer.

In order to make sure that future p2p implementation will use proper
interface e.g. dma_iova_link().., let's remove p2p checks from SG.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
2 files changed