tty: omit need_resched() before cond_resched()

There's no need to call need_resched() because cond_resched() will do
nothing if need_resched() returns false.

Signed-off-by: Mikulas Patocka <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Mikulas Patocka

drivers/tty/tty_buffer.c

@@ -499,8 +499,7 @@ static void flush_to_ldisc(struct work_struct *work)
 		if (!rcvd)
 			break;
 
-		if (need_resched())
-			cond_resched();
+		cond_resched();
 	}
 
 	mutex_unlock(&buf->lock);