NFC: nci: Fix error check of nci_hci_create_pipe() result

net/nfc/nci/hci.c: In function nci_hci_connect_gate :
net/nfc/nci/hci.c:679: warning: comparison is always false due to limited range of data type

In case of error, nci_hci_create_pipe() returns NCI_HCI_INVALID_PIPE,
and not a negative error code.

Correct the check to fix this.
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

net/nfc/nci/hci.c

@@ -676,7 +676,7 @@ int nci_hci_connect_gate(struct nci_dev *ndev,
 	break;
 	default:
 		pipe = nci_hci_create_pipe(ndev, dest_host, dest_gate, &r);
-		if (pipe < 0)
+		if (pipe == NCI_HCI_INVALID_PIPE)
 			return r;
 		pipe_created = true;
 		break;