btrfs: make free_fs_info() call ->kill_sb() unconditional
authorAl Viro <viro@zeniv.linux.org.uk>
Thu, 17 Nov 2011 06:46:50 +0000 (01:46 -0500)
committerAl Viro <viro@zeniv.linux.org.uk>
Mon, 9 Jan 2012 00:34:41 +0000 (19:34 -0500)
... and don't bother with it after btrfs_fill_super() failure -
->kill_sb() (unlike ->put_super()) will be called even if we
have not got non-NULL ->s_root.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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