AMD/IOMMU: fix infinite loop due to ivrs_bdf_entries larger than 16-bit value

AMD/IOMMU: fix infinite loop due to ivrs_bdf_entries larger than 16-bit value

Certain AMD systems could have upto 0x10000 ivrs_bdf_entries.
However, the loop variable (bdf) is declared as u16 which causes
inifinite loop when parsing IOMMU event log with IO_PAGE_FAULT event.
This patch changes the variable to u32 instead.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>