[report] invalid error code in do_register_con_driver() console

[Dan Carpenter]

Hi Jiri,

I'm getting the following static checker warning:

	drivers/tty/vt/vt.c:3588 do_register_con_driver()
	warn: missing error code here? 'csw->con_startup()' failed. 'retval' = '0'

drivers/tty/vt/vt.c
  3582          if (retval)
  3583                  goto err;
  3584  
  3585          desc = csw->con_startup();
  3586  
  3587          if (!desc)
  3588                  goto err;
  3589  
  3590          retval = -EINVAL;
  3591  

Probably, we could more the "retval = -EINVAL;" before the goto?  I
don't think it's intentional?

regards,
dan carpenter