ocfs2: rewrite error handling of ocfs2_fill_super

ocfs2: rewrite error handling of ocfs2_fill_super

Current ocfs2_fill_super() uses one goto label "read_super_error" to
handle all error cases.  And with previous serial patches, the error
handling should fork more branches to handle different error cases.  This
patch rewrite the error handling of ocfs2_fill_super.

Link: https://lkml.kernel.org/r/20220424130952.2436-6-heming.zhao@suse.com
Signed-off-by: Heming Zhao <heming.zhao@suse.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Jun Piao <piaojun@huawei.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Mark Fasheh <mark@fasheh.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>