PRD: Fix data storage exception in PLL analysis

Change-Id: I4cf0778f62a36542eb69c673224f6aded7bf77a5
CQ:SW417664
Backport: release-fips910
Backport: release-op910
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/54442
Reviewed-by: Brian J. Stegmiller <bjs@us.ibm.com>
Reviewed-by: Caleb N. Palmer <cnpalmer@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Zane C. Shelley <zshelle@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/54526
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>

src/usr/diag/prdf/common/plat/p9/prdfP9PllDomain.C

@@ -292,7 +292,7 @@ int32_t PllDomain::Analyze(STEP_CODE_DATA_STRUCT & serviceData,
             if ( tmpCount == serviceData.service_data->getMruListSize() )
             {
                 // No additional callouts were made so add this chip to the list
-                serviceData.service_data->SetCallout( sysRefList[0]->getTrgt());
+                serviceData.service_data->SetCallout( pciList[0]->getTrgt());
             }
         }