mtapi_opencl_c: added check for successful dynamic linking of opencl runtime

mtapi_opencl_c/src/embb_mtapi_opencl.c

@@ -258,8 +258,8 @@ void mtapi_opencl_plugin_initialize(
   cl_int err;
   embb_mtapi_opencl_plugin_t * plugin = &embb_mtapi_opencl_plugin;
 
-  embb_mtapi_opencl_link_at_runtime();
-
+  err = embb_mtapi_opencl_link_at_runtime();
+  if (err != 0) {
     err = clGetPlatformIDs(1, &plugin->platform_id, NULL);
     if (CL_SUCCESS == err) {
       err = clGetDeviceIDs(plugin->platform_id, CL_DEVICE_TYPE_DEFAULT,
@@ -284,6 +284,7 @@ void mtapi_opencl_plugin_initialize(
     if (CL_SUCCESS == err) {
       local_status = MTAPI_SUCCESS;
     }
+  }
 
   mtapi_status_set(status, local_status);
 }