leds: rgb: leds-mt6370-rgb: Fix uninitialized variable 'ret' in mt6370_mc_pattern_clear

Fix the uninitialized symbol 'ret' in the function mt6370_mc_pattern_clear
to resolve the following warning:
drivers/leds/rgb/leds-mt6370-rgb.c:604 mt6370_mc_pattern_clear()
error: uninitialized symbol 'ret'.
Initialize 'ret' to 0 to prevent undefined behavior from uninitialized
access.

Signed-off-by: Suraj Sonawane <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

drivers/leds/rgb/leds-mt6370-rgb.c

···
 	struct mt6370_led *led = container_of(mccdev, struct mt6370_led, mc);
 	struct mt6370_priv *priv = led->priv;
 	struct mc_subled *subled;
-	int i, ret;
+	int i, ret = 0;
 
 	mutex_lock(&led->priv->lock);