ocfs2: optimize error handling in dlm_request_join
ocfs2: optimize error handling in dlm_request_join

Currently error handling in dlm_request_join is a little obscure, so
optimize it to promote readability.

If packet.code is invalid, reset it to JOIN_DISALLOW to keep it
meaningful.  It only influences the log printing.

Signed-off-by: Norton.Zhu <15fa0f0ad0bd61b07647a881a25e0591a3979e03@huawei.com>
Cc: Srinivas Eeda <8f9f858169f43720adbcf205a4574a40abf39c4d@oracle.com>
Reviewed-by: Mark Fasheh <8f0bc92cac940f3e83deb53ced7a1f201bce5732@suse.de>
Cc: Joel Becker <9d3d88cacb47f143c6cf36b9a61c09b528b2c49a@evilplan.org>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs