init: session keyring move to SystemInit()

As some platforms don't have first stage init, move
KeyCtrlGetKeyringId() to SystemInit().
Signed-off-by: NQiheng Lin <linqiheng@huawei.com>
Change-Id: Ida2f422be564b6a6b1d26535cb982b7f85c49d33

services/init/standard/init.c

@@ -94,6 +94,10 @@ static int FdHolderSockInit(void)
 void SystemInit(void)
 {
     SignalInit();
+
+    // Set up a session keyring that all processes will have access to.
+    KeyCtrlGetKeyringId(KEY_SPEC_SESSION_KEYRING, 1);
+
     // umask call always succeeds and return the previous mask value which is not needed here
     (void)umask(DEFAULT_UMASK_INIT);
     MakeDirRecursive("/dev/unix/socket", S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
@@ -199,9 +203,6 @@ static void StartInitSecondStage(void)
     // It will panic if close stdio before execv("/bin/sh", NULL)
     CloseStdio();
 
-    // Set up a session keyring that all processes will have access to.
-    KeyCtrlGetKeyringId(KEY_SPEC_SESSION_KEYRING, 1);
-
 #ifndef DISABLE_INIT_TWO_STAGES
     INIT_LOGI("Start init second stage.");
     SwitchRoot("/usr");