[PATCH] pinctrl: single: Fix memleak in pcs_dt_node_to_map

[kernel test robot]

Hi Guo,

kernel test robot noticed the following build errors:

[auto build test ERROR on linusw-pinctrl/devel]
[also build test ERROR on linusw-pinctrl/for-next linus/master v6.4]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Guo-Mengqi/pinctrl-single-Fix-memleak-in-pcs_dt_node_to_map/20230703-162502
base:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git devel
patch link:    https://lore.kernel.org/r/20230703081716.15810-1-guomengqi3%40huawei.com
patch subject: [PATCH] pinctrl: single: Fix memleak in pcs_dt_node_to_map
config: i386-randconfig-i011-20230703 (https://download.01.org/0day-ci/archive/20230703/202307032226.op2VP7X5-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce: (https://download.01.org/0day-ci/archive/20230703/202307032226.op2VP7X5-lkp@intel.com/reproduce)

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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307032226.op2VP7X5-lkp@intel.com/

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "pinmux_func_name_to_selector" [drivers/pinctrl/pinctrl-single.ko] undefined!

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