ASoC: da7219-aad: remove useless initialization

cppcheck warning:

sound/soc/codecs/da7219-aad.c:118:22: style: Variable 'ret' is
assigned a value that is never used. [unreadVariable]
 int report = 0, ret = 0;
                     ^
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Link: https://lore.kernel.org/r/20210312182246.5153-8-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/da7219-aad.c

@@ -115,7 +115,7 @@ static void da7219_aad_hptest_work(struct work_struct *work)
 
 	__le16 tonegen_freq_hptest;
 	u8 pll_srm_sts, pll_ctrl, gain_ramp_ctrl, accdet_cfg8;
-	int report = 0, ret = 0;
+	int report = 0, ret;
 
 	/* Lock DAPM, Kcontrols affected by this test and the PLL */
 	snd_soc_dapm_mutex_lock(dapm);