Add the missing unlock before return from accept_from_sock()
in the error handling case.
Fixes: 6cde210a97 ("fs: dlm: add helper for init connection")
Reported-by: Hulk Robot <[email protected]>
Signed-off-by: Yang Yingliang <[email protected]>
Signed-off-by: David Teigland <[email protected]>