move data initialisation from ngOnInit to initDatasetInfo (route based)

src/app/dataset-detail/components/dataset-detail/dataset-detail.component.ts

@@ -61,8 +61,6 @@ export class DatasetDetailComponent implements OnInit, OnDestroy {
       this.isLoading = true;
       this.initDatasetInfo();
     });
-
-    this._datasetDetailService.retrieveDatasetData().subscribe();
   }
 
   ngOnDestroy() {
@@ -249,6 +247,8 @@ export class DatasetDetailComponent implements OnInit, OnDestroy {
 
     // Emit event to indicate to child component that the dataset has changed
     this._datasetDetailService.datasetChanged();
+    // move subscription from ngOnInit
+    this._datasetDetailService.retrieveDatasetData().subscribe();
   }
 
   setPosition() {