isdn: misplaced parenthesis in pof_handle_data()

The parenthesis was misplaced.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/isdn/hysdn/hysdn_boot.c

@@ -143,7 +143,7 @@ pof_handle_data(hysdn_card * card, int datlen)
 					     (boot->pof_recid == TAG_CABSDATA) ? "CABSDATA" : "ABSDATA",
 					     datlen, boot->pof_recoffset);
 
-			if ((boot->last_error = card->writebootseq(card, boot->buf.BootBuf, datlen) < 0))
+			if ((boot->last_error = card->writebootseq(card, boot->buf.BootBuf, datlen)) < 0)
 				return (boot->last_error);	/* error writing data */
 
 			if (boot->pof_recoffset + datlen >= boot->pof_reclen)