Trevor Wu authored Feb 13, 2023 and Pablo Sun committed Feb 14, 2023

Coverity reports uninitialized variable problem like below.
Initialize the variable to fix the issue.

353     static int mt6359_put_volsw(struct snd_kcontrol *kcontrol,
354                     struct snd_ctl_elem_value *ucontrol)
355     {
356         struct snd_soc_component *component =
357                 snd_soc_kcontrol_component(kcontrol);
358         struct mt6359_priv *priv =
                    snd_soc_component_get_drvdata(component);
359         struct soc_mixer_control *mc =
360                 (struct soc_mixer_control *)kcontrol->private_value;
(1) Event var_decl: Declaring variable "reg" without initializer.
Also see events:    [uninit_use]
361         unsigned int reg;
362         int index = ucontrol->value.integer.value[0];
363         int ret;
364
365         ret = snd_soc_put_volsw(kcontrol, ucontrol);
(2) Event cond_false:   Condition "ret < 0", taking false branch.
366         if (ret < 0)
(3) Event if_end:   End of if statement.
367             return ret;
368
(4) Event switch:   Switch case value "9740".
369         switch (mc->reg) {
(5) Event switch_case:  Reached case "9740".
370         case MT6359_ZCD_CON2:
371             regmap_read(priv->regmap, MT6359_ZCD_CON2, &reg);
(6) Event uninit_use:   Using uninitialized value "reg".
372             priv->ana_gain[AUDIO_ANALOG_VOLUME_HPOUTL] =
373                 (reg >> RG_AUDHPLGAIN_SFT) & RG_AUDHPLGAIN_MASK;
374             priv->ana_gain[AUDIO_ANALOG_VOLUME_HPOUTR] =
375                 (reg >> RG_AUDHPRGAIN_SFT) & RG_AUDHPRGAIN_MASK;
376             break;

Change-Id: I33b61cac65458d3d126cc405f73bedaaa4253ae3
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>