staging: rtl8712: remove unnecessary NULL check

List wlan_network is built properly with init_list_head and
list_add_tail which cancels out its probability of being NULL because of
the precence of list_head at the top of this structure. Hence, the NULL
test can be omitted.
Signed-off-by: Himadri Pandya <himadri18.07@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/rtl871x_mlme.c

@@ -1120,8 +1120,6 @@ int r8712_select_and_join_from_scan(struct mlme_priv *pmlmepriv)
 		}
 		pnetwork = container_of(pmlmepriv->pscanned,
 					struct wlan_network, list);
-		if (!pnetwork)
-			return _FAIL;
 		pmlmepriv->pscanned = pmlmepriv->pscanned->next;
 		if (pmlmepriv->assoc_by_bssid) {
 			dst_ssid = pnetwork->network.MacAddress;