net: qrtr: Fix passing invalid reference to qrtr_local_enqueue()

[ Upstream commit d28ea1fbbf ]

Once the traversal of the list is completed with list_for_each_entry(),
the iterator (node) will point to an invalid object. So passing this to
qrtr_local_enqueue() which is outside of the iterator block is erroneous
eventhough the object is not used.

So fix this by passing NULL to qrtr_local_enqueue().

Fixes: bdabad3e36 ("net: Add Qualcomm IPC router")
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

net/qrtr/qrtr.c

@@ -660,7 +660,7 @@ static int qrtr_bcast_enqueue(struct qrtr_node *node, struct sk_buff *skb)
 	}
 	mutex_unlock(&qrtr_node_lock);
 
-	qrtr_local_enqueue(node, skb);
+	qrtr_local_enqueue(NULL, skb);
 
 	return 0;
 }