Merge branch 'nfc-skb-leaks'

Shang XiaoJing says:

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

There are 6 kinds of send functions can be called by nci_send_frame():
	virtual_nci_send(),
	fdp_nci_send(),
	nxp_nci_send(),
	s3fwrn5_nci_send(),
	nfcmrvl_nci_send(),
	st_nci_send();

1. virtual_nci_send() will memleak the skb, and has been fixed before.

2. fdp_nci_send() won't free the skb no matter whether write() succeed.

3-4. nxp_nci_send() and s3fwrn5_nci_send() will only free the skb when
write() failed, however write() will not free the skb by itself for when
succeeds.

5. nfcmrvl_nci_send() will call nfcmrvl_XXX_nci_send(), where some of
them will free the skb, but nfcmrvl_i2c_nci_send() only free the skb
when i2c_master_send() return >=0, and memleak will happen when
i2c_master_send() failed in nfcmrvl_i2c_nci_send().

6. st_nci_send() will queue the skb into other list and finally be
freed.

Fix the potential memory leak of skb.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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