Do nothing in HandleCredentialError if error is nil;

ycliuhw · mitechie · commit c74563a1c90d · 2020-02-10T14:25:30.000Z
diff --git a/provider/vsphere/errors.go b/provider/vsphere/errors.go
@@ -48,6 +48,9 @@ func IsAuthorisationFailure(err error) bool {
 // HandleCredentialError marks the current credential as invalid if
 // the passed vsphere error indicates it should be.
 func HandleCredentialError(err error, env *sessionEnviron, ctx context.ProviderCallContext) {
+	if err == nil {
+		return
+	}
 	// LP #1849194: fell into a situation where we can either have an invalid
 	// credential OR user issued a VM spec that has no rights to, e.g. on a
 	// Resource Pool that it has no permissions on using "zone" on add-machine.
