NFC: pn533: Fix missing parenthesis

This is a quite critical patch as it fixes potential reference to
undefined general_bytes which were never set correctly on target
activation due to missing parenthesis.
Signed-off-by: NWaldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

drivers/nfc/pn533.c

@@ -1724,9 +1724,10 @@ static int pn533_activate_target_nfcdep(struct pn533 *dev)
 
 	rsp = (struct pn533_cmd_activate_response *)resp->data;
 	rc = rsp->status & PN533_CMD_RET_MASK;
-	if (rc != PN533_CMD_RET_SUCCESS)
+	if (rc != PN533_CMD_RET_SUCCESS) {
 		dev_kfree_skb(resp);
 		return -EIO;
+	}
 
 	/* ATR_RES general bytes are located at offset 16 */
 	gt_len = resp->len - 16;