Skip ports without DIMMs for VPD collection

Change-Id: Ib85694a7b9fd79ca430e4df67152c6898f791a03
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/45942
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Louis Stermole <stermole@us.ibm.com>
Reviewed-by: ANDRE A. MARIN <aamarin@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/45978
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

src/import/chips/p9/procedures/hwp/memory/lib/dimm/eff_dimm.C

@@ -4653,6 +4653,11 @@ fapi2::ReturnCode eff_dimm::decode_vpd(const fapi2::Target<TARGET_TYPE_MCS>& i_t
     // blob to the decoder for each MCA, regardless of whether the port configurations are the same.
     for (const auto& p : find_targets<TARGET_TYPE_MCA>(i_target))
     {
+        if (mss::count_dimm(p) == 0)
+        {
+            continue;
+        }
+
         // Find our blob in the vector of blob pointers
         uint8_t* l_mt_blob = l_mt_blobs[mss::index(p)];
         uint64_t l_rank_count_dimm[MAX_DIMM_PER_PORT] = {0};