wireless: make regdom passing semantics simpler

The regdom struct is given to the core, so it might as well
free it in error conditions.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Documentation/networking/regulatory.txt

@@ -167,7 +167,6 @@ struct ieee80211_regdomain mydriver_jp_regdom = {
 
 Then in some part of your code after your wiphy has been registered:
 
-	int r;
 	struct ieee80211_regdomain *rd;
 	int size_of_regd;
 	int num_rules = mydriver_jp_regdom.n_reg_rules;
@@ -178,17 +177,11 @@ Then in some part of your code after your wiphy has been registered:
 
 	rd = kzalloc(size_of_regd, GFP_KERNEL);
 	if (!rd)
-	return -ENOMEM;
+		return -ENOMEM;
 
 	memcpy(rd, &mydriver_jp_regdom, sizeof(struct ieee80211_regdomain));
 
-	for (i=0; i < num_rules; i++) {
+	for (i=0; i < num_rules; i++)
 		memcpy(&rd->reg_rules[i], &mydriver_jp_regdom.reg_rules[i],
 			sizeof(struct ieee80211_reg_rule));
-	}
-	r = regulatory_hint(hw->wiphy, NULL, rd);
-	if (r) {
-		kfree(rd);
-		return r;
-	}
-
+	return regulatory_hint(hw->wiphy, NULL, rd);