Bluetooth: Remove assignments in if-statements

Remove assignment in if-statements to be consistent with the coding
style.

Signed-off-by: Valentin Ilie <valentin.ilie@gmail.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index 6e06f6f..f1fbf4f 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -271,7 +271,8 @@
 	if (tty->ops->write == NULL)
 		return -EOPNOTSUPP;
 
-	if (!(hu = kzalloc(sizeof(struct hci_uart), GFP_KERNEL))) {
+	hu = kzalloc(sizeof(struct hci_uart), GFP_KERNEL);
+	if (!hu) {
 		BT_ERR("Can't allocate control structure");
 		return -ENFILE;
 	}
@@ -569,7 +570,8 @@
 	hci_uart_ldisc.write_wakeup	= hci_uart_tty_wakeup;
 	hci_uart_ldisc.owner		= THIS_MODULE;
 
-	if ((err = tty_register_ldisc(N_HCI, &hci_uart_ldisc))) {
+	err = tty_register_ldisc(N_HCI, &hci_uart_ldisc);
+	if (err) {
 		BT_ERR("HCI line discipline registration failed. (%d)", err);
 		return err;
 	}
@@ -614,7 +616,8 @@
 #endif
 
 	/* Release tty registration of line discipline */
-	if ((err = tty_unregister_ldisc(N_HCI)))
+	err = tty_unregister_ldisc(N_HCI);
+	if (err)
 		BT_ERR("Can't unregister HCI line discipline (%d)", err);
 }