Fix gcnArchName bug in topology dump (#937)

Signed-off-by: nileshnegi <Nilesh.Negi@amd.com>

src/graph/topo.cc

@@ -372,7 +372,7 @@ ncclResult_t ncclTopoAddGpu(struct ncclXmlNode* xmlGpu, struct ncclTopoSystem* s
   const char* gcnArch;
   const char* gcnArchName;
   NCCLCHECK(xmlGetAttr(xmlGpu, "gcn", &gcnArch));
-  convertGcnArchToGcnArchName(gcnArch, gcnArchName);
+  convertGcnArchToGcnArchName(gcnArch, &gcnArchName);
   gpu->gpu.gcn = strdup(gcnArchName);
   rcclHipDeviceArch_t arch;
   NCCLCHECK(xmlGetAttrInt(xmlGpu, "arch", &arch.value));

src/graph/xml.cc

@@ -650,7 +650,7 @@ ncclResult_t ncclTopoGetXmlFromGpu(struct ncclXmlNode* pciNode, uint32_t rocmDev
     NCCLCHECK(xmlSetAttr(gpuNode, "gcn", gcn));
   }
   NCCLCHECK(xmlGetAttr(gpuNode, "gcn", &gcn));
-  convertGcnArchToGcnArchName(gcn, gcnArchName);
+  convertGcnArchToGcnArchName(gcn, &gcnArchName);
   NCCLCHECK(xmlSetAttr(gpuNode, "gcn", gcnArchName));
 
   rcclHipDeviceArch_t arch;