nfc: hci: Introduce nfc_llc_del_engine() to reduce code duplication

Add a new helper to avoid code duplication between nfc_llc_exit() and
nfc_llc_unregister().
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

net/nfc/hci/llc.c

@@ -30,15 +30,19 @@ int __init nfc_llc_init(void)
 	return r;
 }
 
+static void nfc_llc_del_engine(struct nfc_llc_engine *llc_engine)
+{
+	list_del(&llc_engine->entry);
+	kfree(llc_engine->name);
+	kfree(llc_engine);
+}
+
 void nfc_llc_exit(void)
 {
 	struct nfc_llc_engine *llc_engine, *n;
 
-	list_for_each_entry_safe(llc_engine, n, &llc_engines, entry) {
-		list_del(&llc_engine->entry);
-		kfree(llc_engine->name);
-		kfree(llc_engine);
-	}
+	list_for_each_entry_safe(llc_engine, n, &llc_engines, entry)
+		nfc_llc_del_engine(llc_engine);
 }
 
 int nfc_llc_register(const char *name, const struct nfc_llc_ops *ops)
@@ -82,9 +86,7 @@ void nfc_llc_unregister(const char *name)
 	if (llc_engine == NULL)
 		return;
 
-	list_del(&llc_engine->entry);
-	kfree(llc_engine->name);
-	kfree(llc_engine);
+	nfc_llc_del_engine(llc_engine);
 }
 
 struct nfc_llc *nfc_llc_allocate(const char *name, struct nfc_hci_dev *hdev,