pinctrl: microchip-sgpio: Simplify locking with guard()

Simplify error handling (less gotos) over locks with guard().

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>

Author: krzk

drivers/pinctrl/pinctrl-microchip-sgpio.c

@@ -264,19 +264,17 @@ static int sgpio_single_shot(struct sgpio_priv *priv)
 	 * setting.
 	 * After the manual burst, reenable the auto repeat mode again.
 	 */
-	mutex_lock(&priv->poll_lock);
+	guard(mutex)(&priv->poll_lock);
 	ret = regmap_update_bits(priv->regs, addr, single_shot | auto_repeat,
 				 single_shot);
 	if (ret)
-		goto out;
+		return ret;
 
 	ret = regmap_read_poll_timeout(priv->regs, addr, ctrl,
 				       !(ctrl & single_shot), 100, 60000);
 
 	/* reenable auto repeat mode even if there was an error */
 	ret2 = regmap_update_bits(priv->regs, addr, auto_repeat, auto_repeat);
-out:
-	mutex_unlock(&priv->poll_lock);
 
 	return ret ?: ret2;
 }