Staging: rtl8712: redundant null check before kfree()

Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/rtl8712/rtl871x_cmd.c

@@ -431,8 +431,7 @@ u8 r8712_joinbss_cmd(struct _adapter  *padapter, struct wlan_network *pnetwork)
 	}
 	psecnetwork = (struct ndis_wlan_bssid_ex *)&psecuritypriv->sec_bss;
 	if (psecnetwork == NULL) {
-		if (pcmd != NULL)
-			kfree((unsigned char *)pcmd);
+		kfree(pcmd);
 		return _FAIL;
 	}
 	memset(psecnetwork, 0, t_len);

drivers/staging/rtl8712/rtl871x_io.c

@@ -73,8 +73,7 @@ static uint _init_intf_hdl(struct _adapter *padapter,
 		goto _init_intf_hdl_fail;
 	return _SUCCESS;
 _init_intf_hdl_fail:
-	if (pintf_priv)
-		kfree((u8 *)pintf_priv);
+	kfree(pintf_priv);
 	return _FAIL;
 }
 
@@ -84,8 +83,7 @@ static void _unload_intf_hdl(struct intf_priv *pintfpriv)
 
 	unload_intf_priv = &r8712_usb_unload_intf_priv;
 	unload_intf_priv(pintfpriv);
-	if (pintfpriv)
-		kfree((u8 *)pintfpriv);
+	kfree(pintfpriv);
 }
 
 static uint register_intf_hdl(u8 *dev, struct intf_hdl *pintfhdl)

drivers/staging/rtl8712/rtl871x_ioctl_linux.c

@@ -1732,8 +1732,7 @@ static int r871x_wx_set_enc_ext(struct net_device *dev,
 		memcpy(param + 1, pext + 1, pext->key_len);
 	}
 	ret = wpa_set_encryption(dev, param, param_len);
-	if (param)
-		kfree((u8 *)param);
+	kfree(param);
 	return ret;
 }
 

drivers/staging/rtl8712/rtl871x_mp.c

@@ -274,8 +274,7 @@ void r8712_SetChannel(struct _adapter *pAdapter)
 	pparm = (struct SetChannel_parm *)_malloc(sizeof(struct
 					 SetChannel_parm));
 	if (pparm == NULL) {
-		if (pcmd != NULL)
-			kfree((u8 *)pcmd);
+		kfree(pcmd);
 		return;
 	}
 	pparm->curr_ch = pAdapter->mppriv.curr_ch;

drivers/staging/rtl8712/rtl871x_xmit.c

@@ -996,8 +996,7 @@ static void free_hwxmits(struct _adapter *padapter)
 {
 	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 
-	if (pxmitpriv->hwxmits)
-		kfree((u8 *)pxmitpriv->hwxmits);
+	kfree(pxmitpriv->hwxmits);
 }
 
 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry)