Fix if statement; 200 is a success code (#13)

Author: jasikpark

client.go

@@ -126,7 +126,7 @@ func (c *Client) Enroll(ctx context.Context, logger logrus.FieldLogger, code str
 	// Log the request ID returned from the server
 	reqID := resp.Header.Get("X-Request-ID")
 	l := logger.WithFields(logrus.Fields{"statusCode": resp.StatusCode, "reqID": reqID})
-	if resp.StatusCode != http.StatusOK {
+	if resp.StatusCode == http.StatusOK {
 		l.Info("Enrollment request returned success code")
 	} else {
 		l.Error("Enrollment request returned error code")