mfd: twl6040: Disable and unprepare clk32k in twl6040_power() error path

The clk32k clock is prepared and enabled in twl6040_power() but the clock
is left enabled in case of an error while it should be disable/unprepared.

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

drivers/mfd/twl6040.c

···
 			/* use automatic power-up sequence */
 			ret = twl6040_power_up_automatic(twl6040);
 			if (ret) {
+				clk_disable_unprepare(twl6040->clk32k);
 				twl6040->power_count = 0;
 				goto out;
 			}
···
 			/* use manual power-up sequence */
 			ret = twl6040_power_up_manual(twl6040);
 			if (ret) {
+				clk_disable_unprepare(twl6040->clk32k);
 				twl6040->power_count = 0;
 				goto out;
 			}