staging: comedi: ni_65xx: remove deadcode in ni_65xx_intr_cmdtest()

Reported by: coverity
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_65xx.c

@@ -548,10 +548,9 @@ static int ni_65xx_intr_cmdtest(struct comedi_device *dev,
 	if (err)
 		return 3;
 
-	/* step 4: fix up any arguments */
+	/* Step 4: fix up any arguments */
 
-	if (err)
-		return 4;
+	/* Step 5: check channel list if it exists */
 
 	return 0;
 }