USB: cdc-acm: do not log successful probe on later errors

Do not log the successful-probe message until the tty device has been
registered.
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210322155318.9837-9-johan@kernel.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/class/cdc-acm.c

@@ -1486,8 +1486,6 @@ static int acm_probe(struct usb_interface *intf,
 	acm->nb_index = 0;
 	acm->nb_size = 0;
 
-	dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
-
 	acm->line.dwDTERate = cpu_to_le32(9600);
 	acm->line.bDataBits = 8;
 	acm_set_line(acm, &acm->line);
@@ -1510,6 +1508,8 @@ static int acm_probe(struct usb_interface *intf,
 		usb_clear_halt(usb_dev, acm->out);
 	}
 
+	dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
+
 	return 0;
 
 err_release_data_interface: