NFC: Small nfc_hci_create_pipe refactoring

Check for error and return if any. This makes it easier to see what is
a 'positive' function flow.
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

net/nfc/hci/command.c

@@ -257,7 +257,9 @@ static u8 nfc_hci_create_pipe(struct nfc_hci_dev *hdev, u8 dest_host,
 	*result = nfc_hci_execute_cmd(hdev, NFC_HCI_ADMIN_PIPE,
 				      NFC_HCI_ADM_CREATE_PIPE,
 				      (u8 *) &params, sizeof(params), &skb);
-	if (*result == 0) {
+	if (*result < 0)
+		return NFC_HCI_INVALID_PIPE;
+
 	resp = (struct hci_create_pipe_resp *)skb->data;
 	pipe = resp->pipe;
 	kfree_skb(skb);
@@ -265,8 +267,6 @@ static u8 nfc_hci_create_pipe(struct nfc_hci_dev *hdev, u8 dest_host,
 	pr_debug("pipe created=%d\n", pipe);
 
 	return pipe;
-	} else
-		return NFC_HCI_INVALID_PIPE;
 }
 
 static int nfc_hci_delete_pipe(struct nfc_hci_dev *hdev, u8 pipe)