PRD: getConnectedChild proc to membuf bug fix

Change-Id: I41c9e24abdbb40319df51d65bbdae0b5c0c16c4c
CQ: SW429054
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/58839
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Benjamin J. Weisenbeck <bweisenb@us.ibm.com>
Reviewed-by: Matt Derksen <mderkse1@us.ibm.com>
Reviewed-by: Brian J. Stegmiller <bjs@us.ibm.com>
Reviewed-by: Zane C. Shelley <zshelle@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/58904
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/prdfTargetServices.C

@@ -868,6 +868,10 @@ TargetHandle_t getConnectedChild( TargetHandle_t i_target, TYPE i_connType,
             {
                 itr = list.end(); // just in case it is not found
             }
+            else
+            {
+                *itr = trgt;
+            }
         }
         else if ( TYPE_DMI == trgtType && TYPE_MEMBUF == i_connType )
         {