nfc: st-nci: remove redundant assignment to variable r

The variable r is being initialized with a value that is never
read and it is being updated later with a new value. The
initialization is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/nfc/st-nci/i2c.c

@@ -72,7 +72,7 @@ static void st_nci_i2c_disable(void *phy_id)
  */
 static int st_nci_i2c_write(void *phy_id, struct sk_buff *skb)
 {
-	int r = -1;
+	int r;
 	struct st_nci_i2c_phy *phy = phy_id;
 	struct i2c_client *client = phy->i2c_dev;