Revert "wifi: mac80211_hwsim: check the return value of nla_put_u32"

This reverts commit b970ac68 ("wifi: mac80211_hwsim: check the
return value of nla_put_u32") since it introduced a memory leak in
the error path, which seems worse than sending an incomplete skb,
and the put can't fail anyway since the SKB was just allocated.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/virtual/mac80211_hwsim.c

@@ -582,9 +582,8 @@ static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 		 */
 
 		/* Add vendor data */
-		err = nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
-		if (err)
-			return err;
+		nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
+
 		/* Send the event - this will call nla_nest_end() */
 		cfg80211_vendor_event(skb, GFP_KERNEL);
 	}