This patch fixes a bug in Ip4ConfigProtocol, that new created IP interface is not freed if Open ARP protocol failed. Reviewed-by: Ye Ting <ting.ye@intel.com> Reviewed-by: Wu Jiaxin <jiaxin.wu@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Fu Siyuan <siyuan.fu@intel.com>