audit: cull redundancy in audit_rule_change

Re-factor audit_rule_change() to reduce the amount of code redundancy and
simplify the logic.

Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>

1 files changed, 7 insertions, 11 deletions

diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index 4419d1fbcad1..d214cd073a58 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -1064,31 +1064,27 @@ int audit_rule_change(int type, __u32 portid, int seq, void *data,
         int err = 0;
         struct audit_entry *entry;
 
+        entry = audit_data_to_entry(data, datasz);
+        if (IS_ERR(entry))
+                return PTR_ERR(entry);
+
         switch (type) {
         case AUDIT_ADD_RULE:
-                entry = audit_data_to_entry(data, datasz);
-                if (IS_ERR(entry))
-                        return PTR_ERR(entry);
-
                 err = audit_add_rule(entry);
                 audit_log_rule_change("add_rule", &entry->rule, !err);
-                if (err)
-                        audit_free_rule(entry);
                 break;
         case AUDIT_DEL_RULE:
-                entry = audit_data_to_entry(data, datasz);
-                if (IS_ERR(entry))
-                        return PTR_ERR(entry);
-
                 err = audit_del_rule(entry);
                 audit_log_rule_change("remove_rule", &entry->rule, !err);
-                audit_free_rule(entry);
                 break;
         default:
                 err = -EINVAL;
                 WARN_ON(1);
         }
 
+        if (err || type == AUDIT_DEL_RULE)
+                audit_free_rule(entry);
+
         return err;
 }