Update app.py

app.py

@@ -33,7 +33,7 @@ pipe = ov_genai.LLMPipeline(InUsed_model_name, device)
 
 def generate_response(prompt, model_name):
     global pipe, tokenizer, InUsed_model_name 
-    if(InUsed_model_name==model_name):
+    if(InUsed_model_name!=model_name):
         model_path = model_name
         del pipe
         gc.collect()