ocfs2: ocfs2_mount_volume does cleanup job before return error

ocfs2: ocfs2_mount_volume does cleanup job before return error

After this patch, when error, ocfs2_fill_super doesn't take care to
release resources which are allocated in ocfs2_mount_volume.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Heming Zhao <[email protected]>
Reviewed-by: Joseph Qi <[email protected]>
Cc: Changwei Ge <[email protected]>
Cc: Gang He <[email protected]>
Cc: Joel Becker <[email protected]>
Cc: Jun Piao <[email protected]>
Cc: Junxiao Bi <[email protected]>
Cc: Mark Fasheh <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>