re: ath6kl: Remove redundant pointer check

[Dan Carpenter <dan.carpenter@oracle.com>]

Hello Sujith Manoharan,

This is a semi-automatic email about new static checker warnings.

The patch 4a8ce2fd055f: "ath6kl: Remove redundant pointer check" from 
Jan 10, 2012, leads to the following Smatch complaint:

drivers/net/wireless/ath/ath6kl/cfg80211.c:1061 ath6kl_cfg80211_add_key()
	 warn: variable dereferenced before check 'params' (see line 1026)

drivers/net/wireless/ath/ath6kl/cfg80211.c
  1025		memcpy(key->seq, params->seq, key->seq_len);
  1026		key->cipher = params->cipher;
                              ^^^^^^^^^^^^^^
dereference.

  1027	
  1028		switch (key->cipher) {
  1029		case WLAN_CIPHER_SUITE_WEP40:
  1030		case WLAN_CIPHER_SUITE_WEP104:
  1031			key_type = WEP_CRYPT;
  1032			break;

[ snip ]

  1058	
  1059		if (vif->nw_type == AP_NETWORK && !pairwise &&
  1060		    (key_type == TKIP_CRYPT || key_type == AES_CRYPT ||
  1061		     key_type == WAPI_CRYPT) && params) {
                                                ^^^^^^
check.  This check is redundant too so we should remove it as well.

  1062			ar->ap_mode_bkey.valid = true;
  1063			ar->ap_mode_bkey.key_index = key_index;

regards,
dan carpenter