diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 05cfee7..2ae5ae2 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1429,13 +1429,16 @@
 		return -EINVAL;
 	}
 
-	if (!po->running)
-		return -EINVAL;
-
-	if (po->fanout)
-		return -EALREADY;
-
 	mutex_lock(&fanout_mutex);
+
+	err = -EINVAL;
+	if (!po->running)
+		goto out;
+
+	err = -EALREADY;
+	if (po->fanout)
+		goto out;
+
 	match = NULL;
 	list_for_each_entry(f, &fanout_list, list) {
 		if (f->id == id &&
@@ -1491,17 +1494,16 @@
 	struct packet_sock *po = pkt_sk(sk);
 	struct packet_fanout *f;
 
-	f = po->fanout;
-	if (!f)
-		return;
-
 	mutex_lock(&fanout_mutex);
-	po->fanout = NULL;
+	f = po->fanout;
+	if (f) {
+		po->fanout = NULL;
 
-	if (atomic_dec_and_test(&f->sk_ref)) {
-		list_del(&f->list);
-		dev_remove_pack(&f->prot_hook);
-		kfree(f);
+		if (atomic_dec_and_test(&f->sk_ref)) {
+			list_del(&f->list);
+			dev_remove_pack(&f->prot_hook);
+			kfree(f);
+		}
 	}
 	mutex_unlock(&fanout_mutex);
 }