tty: ipwireless: Remove tty->closing abort from ipw_open()

tty->closing cannot be set on ipw_open() because the ipwireless tty
driver does not call any functions that set tty->closing.

CC: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/ipwireless/tty.c

@@ -93,11 +93,6 @@ static int ipw_open(struct tty_struct *linux_tty, struct file *filp)
 		return -ENODEV;
 
 	mutex_lock(&tty->ipw_tty_mutex);
-
-	if (tty->closing) {
-		mutex_unlock(&tty->ipw_tty_mutex);
-		return -ENODEV;
-	}
 	if (tty->port.count == 0)
 		tty->tx_bytes_queued = 0;