[EBTABLES]: vfree() checking cleanups

From: jlamanna@gmail.com

ebtables.c vfree() checking cleanups.

Signed-off by: James Lamanna <jlamanna@gmail.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 18ebc66..c454014 100644 (file)
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -859,8 +859,7 @@ static int translate_table(struct ebt_replace *repl,
                if (repl->valid_hooks & (1 << i))
                        if (check_chainloops(newinfo->hook_entry[i],
                           cl_s, udc_cnt, i, newinfo->entries)) {
-                               if (cl_s)
-                                       vfree(cl_s);
+                               vfree(cl_s);
                                return -EINVAL;
                        }
 
@@ -883,8 +882,7 @@ static int translate_table(struct ebt_replace *repl,
                EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size,
                   ebt_cleanup_entry, &i);
        }
-       if (cl_s)
-               vfree(cl_s);
+       vfree(cl_s);
        return ret;
 }
 
@@ -1030,8 +1028,7 @@ static int do_replace(void __user *user, unsigned int len)
        }
        vfree(table);
 
-       if (counterstmp)
-               vfree(counterstmp);
+       vfree(counterstmp);
        return ret;
 
 free_unlock:
@@ -1040,8 +1037,7 @@ free_iterate:
        EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size,
           ebt_cleanup_entry, NULL);
 free_counterstmp:
-       if (counterstmp)
-               vfree(counterstmp);
+       vfree(counterstmp);
        /* can be initialized in translate_table() */
        if (newinfo->chainstack) {
                for (i = 0; i < num_possible_cpus(); i++)
@@ -1049,11 +1045,9 @@ free_counterstmp:
                vfree(newinfo->chainstack);
        }
 free_entries:
-       if (newinfo->entries)
-               vfree(newinfo->entries);
+       vfree(newinfo->entries);
 free_newinfo:
-       if (newinfo)
-               vfree(newinfo);
+       vfree(newinfo);
        return ret;
 }
 
@@ -1213,8 +1207,7 @@ void ebt_unregister_table(struct ebt_table *table)
        down(&ebt_mutex);
        LIST_DELETE(&ebt_tables, table);
        up(&ebt_mutex);
-       if (table->private->entries)
-               vfree(table->private->entries);
+       vfree(table->private->entries);
        if (table->private->chainstack) {
                for (i = 0; i < num_possible_cpus(); i++)
                        vfree(table->private->chainstack[i]);