[clk:clk-determine-rate 66/68] sound/soc/codecs/tlv320aic32x4-clk.c:219 clk_aic32x4_pll_determine_rate() warn: unsigned 'rate' is never less than zero.

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-determine-rate
head:   326cc42f9fdc3030676e949d5cea3ccc923fd1de
commit: 25d43ec352eaefbfaee0912d02b6f10ea606931f [66/68] ASoC: tlv320aic32x4: pll: Switch to determine_rate
config: x86_64-randconfig-m001-20230608 (https://download.01.org/0day-ci/archive/20230610/202306101217.08CRVGcK-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0

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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306101217.08CRVGcK-lkp@intel.com/

smatch warnings:
sound/soc/codecs/tlv320aic32x4-clk.c:219 clk_aic32x4_pll_determine_rate() warn: unsigned 'rate' is never less than zero.

vim +/rate +219 sound/soc/codecs/tlv320aic32x4-clk.c

   206	
   207	static int clk_aic32x4_pll_determine_rate(struct clk_hw *hw,
   208						  struct clk_rate_request *req)
   209	{
   210		struct clk_aic32x4_pll_muldiv settings;
   211		unsigned long rate;
   212		int ret;
   213	
   214		ret = clk_aic32x4_pll_calc_muldiv(&settings, req->rate, req->best_parent_rate);
   215		if (ret < 0)
   216			return -EINVAL;
   217	
   218		rate = clk_aic32x4_pll_calc_rate(&settings, req->best_parent_rate);
 > 219		if (rate < 0)
   220			return rate;
   221	
   222		req->rate = rate;
   223		return 0;
   224	}
   225	

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