Staging: comedi: das1800: fix kfree coding style issue

Signed-off-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/comedi/drivers/das1800.c

@@ -797,9 +797,7 @@ static int das1800_detach(struct comedi_device *dev)
 			free_dma(devpriv->dma0);
 		if (devpriv->dma1)
 			free_dma(devpriv->dma1);
-		if (devpriv->ai_buf0)
 		kfree(devpriv->ai_buf0);
-		if (devpriv->ai_buf1)
 		kfree(devpriv->ai_buf1);
 	}