Return err when NewHipLib() detect error. (#8012)

Signed-off-by: zhanluxianshen <zhanluxianshen@163.com>

discover/amd_windows.go

@@ -184,7 +184,7 @@ func (gpus RocmGPUInfoList) RefreshFreeMemory() error {
 	hl, err := NewHipLib()
 	if err != nil {
 		slog.Debug(err.Error())
-		return nil
+		return err
 	}
 	defer hl.Release()