iommu/amd: Fix typo of , instead of ;

Generates the same code, but is not the expected C style.

Fixes: aaac38f6 ("iommu/amd: Initial support for AMD IOMMU v2 page table")
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/11-v2-831cdc4d00f3+1a315-amd_iopgtbl_jgg@nvidia.com


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