Merge pull request #114415 from hoskeri/automated-cherry-pick-of-#114…

…404-upstream-release-1.26

Automated cherry pick of #114404: Check the correct error in d.downloadAPIs

Kubernetes-commit: dd0b0c00e5a10352fa74a09fb32aca509c7f0c48

discovery/discovery_client.go

@@ -196,7 +196,7 @@ func (d *DiscoveryClient) GroupsAndMaybeResources() (*metav1.APIGroupList, map[s
 	}
 	// Discovery groups and (possibly) resources downloaded from /apis.
 	apiGroups, apiResources, aerr := d.downloadAPIs()
-	if err != nil {
+	if aerr != nil {
 		return nil, nil, aerr
 	}
 	// Merge apis groups into the legacy groups.