servicemanager: fatal if not ctx mgr

Bug: 280514080
Test: boot
Change-Id: I368658b1121782fb5b80b1f44be10e048f013930
diff --git a/cmds/servicemanager/main.cpp b/cmds/servicemanager/main.cpp
index 520d6f9..86a45e6 100644
--- a/cmds/servicemanager/main.cpp
+++ b/cmds/servicemanager/main.cpp
@@ -132,8 +132,7 @@
 
     IPCThreadState::self()->setTheContextObject(manager);
     if (!ps->becomeContextManager()) {
-        LOG(ERROR) << "Could not become context manager";
-        // TODO(b/280514080): fatal
+        LOG(FATAL) << "Could not become context manager";
     }
 
     sp<Looper> looper = Looper::prepare(false /*allowNonCallbacks*/);