when create /proc/fs/nfs/exports error, we should remove /proc/fs/nfs,
if don't do it, it maybe cause Memory leak.
Signed-off-by: Nfanchaoting <fanchaoting@cn.fujitsu.com>
Reviewed-by: Nchendt.fnst <chendt.fnst@cn.fujitsu.com>
Signed-off-by: NJ. Bruce Fields <bfields@redhat.com>