VMManager: Clear host root on booting ISO

pcsx2/IopBios.cpp

@@ -96,6 +96,11 @@ void Hle_SetElfPath(const char* elfFileName)
 	Console.WriteLn("HLE Host: Set 'host:' root path to: %s\n", hostRoot.c_str());
 }
 
+void Hle_ClearElfPath()
+{
+	hostRoot = {};
+}
+
 namespace R3000A
 {
 

pcsx2/IopBios.h

@@ -86,3 +86,5 @@ namespace R3000A
 } // namespace R3000A
 
 extern void Hle_SetElfPath(const char* elfFileName);
+extern void Hle_ClearElfPath();
+

pcsx2/VMManager.cpp

@@ -905,6 +905,10 @@ bool VMManager::ApplyBootParameters(VMBootParameters params, std::string* state_
 		Hle_SetElfPath(s_elf_override.c_str());
 		EmuConfig.UseBOOT2Injection = true;
 	}
+	else
+	{
+		Hle_ClearElfPath();
+	}
 
 	return true;
 }