isolate() will assert isolation objects must exist for each chip

Change-Id: I45a97a9b8fa8fdd0445e9002ac4be5b27490c0ba
diff --git a/src/isolator/hei_isolator.hpp b/src/isolator/hei_isolator.hpp
index 207f940..fddcedd 100644
--- a/src/isolator/hei_isolator.hpp
+++ b/src/isolator/hei_isolator.hpp
@@ -66,8 +66,8 @@
     void uninitialize();
 
     /** @brief See API wrapper description in hei_main.hpp. */
-    ReturnCode isolate(const std::vector<Chip>& i_chipList,
-                       IsolationData& o_isoData) const;
+    void isolate(const std::vector<Chip>& i_chipList,
+                 IsolationData& o_isoData) const;
 
   private:
     // BEGIN temporary code