Modify INTRP Initialization Order to route LSI interrupts over PSHIHB

  - Currently the code sets up routing over PSIHIB and then a second
    function call overwrites that setting which forces things back
    on the local wire

Change-Id: I7d3b44d48c66f994e8a8758eb75568038492fdaf
CQ: SW464174
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/86669
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
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>
Reviewed-by: Ilya Smirnov <ismirno@us.ibm.com>
Reviewed-by: Michael Baiocchi <mbaiocch@us.ibm.com>
Reviewed-by: Daniel M Crowell <dcrowell@us.ibm.com>

src/usr/intr/intrrp.C

@@ -547,13 +547,6 @@ errlHndl_t IntrRp::_init()
                 break;
             }
 
-            //Route LSI interrupt events over PSIHB instead of local wire
-            // This is a HW Bug Workaround for slaves using the PSIHB and
-            // the master using the local wire
-            routeLSIInterrupts(l_procIntrHdlr);
-
-            enableLsiInterrupts();
-
             TRACFCOMP(g_trac_intr, "IntrRp::_init() Enabling PSIHB Interrupts");
             //Enable PSIHB Interrupts
             l_err = enableInterrupts(l_procIntrHdlr);
@@ -562,6 +555,13 @@ errlHndl_t IntrRp::_init()
                 TRACFCOMP(g_trac_intr, "IntrRp::_init() Error enabling Interrupts");
                 break;
             }
+
+            //Route LSI interrupt events over PSIHB instead of local wire
+            // This is a HW Bug Workaround for slaves using the PSIHB and
+            // the master using the local wire
+            routeLSIInterrupts(l_procIntrHdlr);
+
+            enableLsiInterrupts();
         }
 
         // Build up list of unregistered LSI sources, at this point no sourced