[Linux-stm32] [PATCH] hwrng: stm32 - add missing clk_disable_unprepare() in stm32_rng_init()

[Yang Yingliang]

From: Yang Yingliang <yangyingliang at huawei.com>

Add clk_disable_unprepare() in the error path in stm32_rng_init().

Fixes: 6b85a7e141cb ("hwrng: stm32 - implement STM32MP13x support")
Signed-off-by: Yang Yingliang <yangyingliang at huawei.com>
---
 drivers/char/hw_random/stm32-rng.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/hw_random/stm32-rng.c b/drivers/char/hw_random/stm32-rng.c
index 41e1dbea5d2e..efd6edcd7066 100644
--- a/drivers/char/hw_random/stm32-rng.c
+++ b/drivers/char/hw_random/stm32-rng.c
@@ -325,6 +325,7 @@ static int stm32_rng_init(struct hwrng *rng)
 							(!(reg & RNG_CR_CONDRST)),
 							10, 50000);
 		if (err) {
+			clk_disable_unprepare(priv->clk);
 			dev_err((struct device *)priv->rng.priv,
 				"%s: timeout %x!\n", __func__, reg);
 			return -EINVAL;
-- 
2.25.1