tty: Drop tty->count on tty_reopen() failure

In case of tty_ldisc_reinit() failure, tty->count should be decremented
back, otherwise we will never release_tty().
Tetsuo reported that it fixes noisy warnings on tty release like:
  pts pts4033: tty_release: tty->count(10529) != (#fd's(7) + #kopen's(0))

Fixes: commit 892d1fa7eaae ("tty: Destroy ldisc instance on hangup")

Cc: [email protected] # v4.6+
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Jiri Slaby <[email protected]>
Reviewed-by: Jiri Slaby <[email protected]>
Tested-by: Jiri Slaby <[email protected]>
Tested-by: Mark Rutland <[email protected]>
Tested-by: Tetsuo Handa <[email protected]>
Signed-off-by: Dmitry Safonov <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions