[PATCH] rtc: rzn1: initialize val in rzn1_rtc_set_offset

[Tom Rix]

The clang build fails with
rtc-rzn1.c:291:3: error: variable 'val' is uninitialized when used here [-Werror,-Wuninitialized]
  val |= RZN1_RTC_SUBU_DEV;
  ^~~

The val variable in rzn1_rtc_set_offset() is never initialized so
the series of |= operations in the function will start with a
garbage value.  So initialize val to 0.

Fixes: be4a11cf98af ("rtc: rzn1: Add oscillator offset support")
Signed-off-by: Tom Rix <trix@xxxxxxxxxx>
---
 drivers/rtc/rtc-rzn1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-rzn1.c b/drivers/rtc/rtc-rzn1.c
index 980ade8c9601..0b4bf6e43464 100644
--- a/drivers/rtc/rtc-rzn1.c
+++ b/drivers/rtc/rtc-rzn1.c
@@ -272,7 +272,7 @@ static int rzn1_rtc_set_offset(struct device *dev, long offset)
 	struct rzn1_rtc *rtc = dev_get_drvdata(dev);
 	unsigned int steps;
 	int stepsh, stepsl;
-	u32 val;
+	u32 val = 0;
 	int ret;
 
 	/*
-- 
2.27.0