Why not report gpa to iotval2 if msi translation is fault or misconfigured ?

[baimengwei]

https://github.com/riscv-non-isa/riscv-iommu/blob/main/iommu_ref_model/libiommu/src/iommu_msi_trans.c#L30

uint8_t
msi_address_translation(
    uint64_t gpa, uint8_t is_exec, device_context_t *DC, 
    uint8_t *is_msi, uint8_t *is_mrif, uint32_t *mrif_nid, uint64_t *dest_mrif_addr,
    uint32_t *cause, uint64_t *iotval2, uint64_t *pa, 
    uint64_t *page_sz, gpte_t *g_pte, uint8_t check_access_perms ) {

    uint64_t A, m, I;
    uint8_t status;
    msipte_t msipte;

    *iotval2 = 0;

[ved-rivos]

The iotval2 is reported only for a guest-page fault and is 0 for all other faults.