staging: comedi: ni_6527: remove deadcode in ni6527_intr_cmdtest()

Reported-by: coverity (CID 142962)
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/ni_6527.c

@@ -238,9 +238,6 @@ static int ni6527_intr_cmdtest(struct comedi_device *dev,
 	/* Step 2a : make sure trigger sources are unique */
 	/* Step 2b : and mutually compatible */
 
-	if (err)
-		return 2;
-
 	/* Step 3: check if arguments are trivially valid */
 
 	err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);