thermal: intel: hfi: remove NULL check after container_of() call

container_of() will never return NULL, so remove useless code.
Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/thermal/intel/intel_hfi.c

@@ -243,8 +243,6 @@ static void hfi_update_work_fn(struct work_struct *work)
 
 	hfi_instance = container_of(to_delayed_work(work), struct hfi_instance,
 				    update_work);
-	if (!hfi_instance)
-		return;
 
 	update_capabilities(hfi_instance);
 }