vboot TPM stub functions return error codes

firmware/lib/tpm_lite/tlcl.c

 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /* A lightweight TPM command library.
  *
  * The general idea is that TPM commands are array of bytes whose
  * fields are mostly compile-time constant.  The goal is to build much
  * of the commands at compile time (or build time) and change some of
@@ skipping 73 matching lines @@
 
 
 /* Sends a command and returns the error code. */
 static uint32_t Send(const uint8_t* command) {
   uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE];
   return TlclSendReceive(command, response, sizeof(response));
 }
 
 /* Exported functions. */
 
-void TlclLibInit(void) {
-  TlclStubInit();
+uint32_t TlclLibInit(void) {
+  return TlclStubInit();
 }
 
 uint32_t TlclStartup(void) {
   VBDEBUG(("TPM: Startup\n"));
   return Send(tpm_startup_cmd.buffer);
 }
 
 uint32_t TlclResume(void) {
   VBDEBUG(("TPM: Resume\n"));
   return Send(tpm_resume_cmd.buffer);
@@ skipping 212 matching lines @@
   Memcpy(&cmd, &tpm_getpermissions_cmd, sizeof(cmd));
   ToTpmUint32(cmd.buffer + tpm_getpermissions_cmd.index, index);
   result = TlclSendReceive(cmd.buffer, response, sizeof(response));
   if (result != TPM_SUCCESS)
     return result;
 
   nvdata = response + kTpmResponseHeaderLength + sizeof(size);
   FromTpmUint32(nvdata + kNvDataPublicPermissionsOffset, permissions);
   return result;
 }