CryptoPkg/BaseCryptLib: Fix possible uninitialized use
    
    `Result` can be used uninitialized in both functions after following
    either first or second `goto` statement.
    
    Cc: Jiewen Yao <jiewen.yao@intel.com>
    Cc: Jian J Wang <jian.j.wang@intel.com>
    Cc: Xiaoyu Lu <xiaoyux.lu@intel.com>
    Cc: Guomin Jiang <guomin.jiang@intel.com>
    Signed-off-by: Sergei Dmitrouk <sergei@posteo.net>
    Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>