ath6kl: remove unnecessary break after return

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wireless/ath/ath6kl/init.c

@@ -1187,7 +1187,6 @@ static int ath6kl_upload_board_file(struct ath6kl *ar)
 	default:
 		WARN_ON(1);
 		return -EINVAL;
-		break;
 	}
 
 	if (board_ext_address &&