mfd: arizona: Remove unneded ret variable

The ret variable is not needed since is not used in the
function. Remove the variable and just return 0 instead.

Signed-off-by: Javier Martinez Canillas <[e-mail]>
Acked-by: Charles Keepax <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

drivers/mfd/arizona-core.c

···
 
 int arizona_clk32k_disable(struct arizona *arizona)
 {
-	int ret = 0;
-
 	mutex_lock(&arizona->clk_lock);
 
 	BUG_ON(arizona->clk32k_ref <= 0);
···
 
 	mutex_unlock(&arizona->clk_lock);
 
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(arizona_clk32k_disable);