Merge branch 'nfc-leaks'

Shang XiaoJing says:

====================
nfc: Fix potential memory leak of skb

There are still somewhere maybe leak the skb, fix the memleaks by adding
fail path.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/nfc/nfcmrvl/i2c.c

@@ -112,8 +112,10 @@ static int nfcmrvl_i2c_nci_send(struct nfcmrvl_private *priv,
 	struct nfcmrvl_i2c_drv_data *drv_data = priv->drv_data;
 	int ret;
 
-	if (test_bit(NFCMRVL_PHY_ERROR, &priv->flags))
+	if (test_bit(NFCMRVL_PHY_ERROR, &priv->flags)) {
+		kfree_skb(skb);
 		return -EREMOTEIO;
+	}
 
 	ret = i2c_master_send(drv_data->i2c, skb->data, skb->len);
 

drivers/nfc/nxp-nci/core.c

@@ -73,11 +73,15 @@ static int nxp_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
 	struct nxp_nci_info *info = nci_get_drvdata(ndev);
 	int r;
 
-	if (!info->phy_ops->write)
+	if (!info->phy_ops->write) {
+		kfree_skb(skb);
 		return -EOPNOTSUPP;
+	}
 
-	if (info->mode != NXP_NCI_MODE_NCI)
+	if (info->mode != NXP_NCI_MODE_NCI) {
+		kfree_skb(skb);
 		return -EINVAL;
+	}
 
 	r = info->phy_ops->write(info->phy_id, skb);
 	if (r < 0) {

drivers/nfc/s3fwrn5/core.c

@@ -105,6 +105,7 @@ static int s3fwrn5_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
 	mutex_lock(&info->mutex);
 
 	if (s3fwrn5_get_mode(info) != S3FWRN5_MODE_NCI) {
+		kfree_skb(skb);
 		mutex_unlock(&info->mutex);
 		return -EINVAL;
 	}