iommu/io-pgtable-arm: Use consistent sizes for page allocation and freeing

At the moment we use alloc_size to allocate memory but then there
is a logical error where we just size in the error and free path,
which might be smaller.
Also we size to do DMA-API operations, which is OK, but confusing.

Instead of this error-prone handling, just set size to alloc_size
and use it everywhere.

Signed-off-by: Mostafa Saleh <smostafa@google.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Mostafa Saleh 2026-05-13 21:52:01 +00:00 • committed by Joerg Roedel
commit 4315401bad