SWDEV-298434 - Delete texture references resources before deleting the ptr.

Change-Id: Ib616aadd45eced1b10891c908e986bbeddc08288

hipamd/src/hip_global.cpp

@@ -41,6 +41,7 @@ DeviceVar::~DeviceVar() {
 
   if (shadowVptr != nullptr) {
     textureReference* texRef = reinterpret_cast<textureReference*>(shadowVptr);
+    ihipUnbindTexture(texRef);
     delete texRef;
     shadowVptr = nullptr;
   }