staging: lustre: llite: add error handler in inode prepare phase

Add error handler during inode inialization, so inode will
become bad inode if something bad happens during inode prepare
phase, otherwise the striped directory will not get its layout
and being mis-regarded as normal directory.

Signed-off-by: wang di <di.wang@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4930
Reviewed-on: http://review.whamcloud.com/10170
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>