Fix sysman only init to disallow retrieval of loader context due to version compatibility (#334)

- Given the static loader will no longer call the sysman apis directly,
  but thru the dynamic loader, split sysman drivers will be done by the
dynamic loader and assignment in the static loader is not needed.
- When the context read from the loader was newer than the context locally, the memory
  assignment was invalid causing issues.

Signed-off-by: Neil R. Spruit <[email protected]>

Author: nrspruit

source/lib/ze_lib.cpp

@@ -174,16 +174,12 @@ namespace ze_lib
         // Given zesInit, then zesDrivers needs to be used as the sysmanInstanceDrivers;
         bool loaderContextAccessAllowed = true;
 #ifdef DYNAMIC_LOAD_LOADER
+        loaderContextAccessAllowed = false;
         loader::context_t *loaderContext = nullptr;
-        if (loaderGetContext == nullptr) {
-            loaderContextAccessAllowed = false;
-        } else {
-            loaderContext = loaderGetContext();
-        }
 #else
         loader::context_t *loaderContext = loader::context;
 #endif
-        if (sysmanOnly && loaderContextAccessAllowed) {
+        if (sysmanOnly && loaderContextAccessAllowed && loaderContext != nullptr) {
             loaderContext->sysmanInstanceDrivers = &loaderContext->zesDrivers;
         }