[jimc:dd-ratelimit-2 61/76] lib/dynamic_debug_ratelimit.c:151:4-9: WARNING: NULL check before some freeing functions is not needed.

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/jimc/linux.git dd-ratelimit-2
head:   31212444bcca4d1547711ec572b5a398d74640ca
commit: 3ffeebe328d9f1bc581ba7163321a9519ec821d3 [61/76] lib/dynamic_debug: Implement dynamic solo and shared rate-limiting
config: nios2-randconfig-r051-20260819 (https://download.01.org/0day-ci/archive/20260819/202608192319.yPitUgGb-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 11.5.0

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608192319.yPitUgGb-lkp@intel.com/

cocci warnings: (new ones prefixed by >>)
>> lib/dynamic_debug_ratelimit.c:151:4-9: WARNING: NULL check before some freeing functions is not needed.

vim +151 lib/dynamic_debug_ratelimit.c

   140	
   141	void ddebug_ratelimit_free_info(const struct _ddebug_info *di)
   142	{
   143		int i;
   144		struct _ddebug *dp;
   145	
   146		for (i = 0; i < di->descs.len; i++) {
   147			dp = &di->descs.start[i];
   148			if (dp->flags & _DPRINTK_FLAGS_RATELIMIT_SOLO) {
   149				struct ddebug_ratelimit_solo *wrapper = mtree_erase(&dd_ratelimits_solo, (unsigned long)dp);
   150				if (wrapper)
 > 151					kfree(wrapper); /* Unloading module context is safe for direct kfree */

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