[PATCH] rtc: mxc_v2: fix clk enable-count underflow warning in remove()

[Cong Nguyen <congnt264@gmail.com>]

After probe, pdata->clk is left prepared but disabled -- every RTC
callback enables/disables it transiently around register access.
mxc_rtc_remove() calls clk_disable_unprepare(), which disables it
again and hits clk_core_disable()'s "already disabled" WARN().

Use plain clk_unprepare() instead, matching the probe-failure paths
which already do this correctly.

Fixes: 83c880f79e88 ("rtc: add mxc driver for i.MX53 SRTC")
Assisted-by: Claude:claude-opus-4
Signed-off-by: Cong Nguyen <congnt264@gmail.com>
---
 drivers/rtc/rtc-mxc_v2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-mxc_v2.c b/drivers/rtc/rtc-mxc_v2.c
index a07acbbcfaeb..93dcf18abde2 100644
--- a/drivers/rtc/rtc-mxc_v2.c
+++ b/drivers/rtc/rtc-mxc_v2.c
@@ -365,7 +365,7 @@ static void mxc_rtc_remove(struct platform_device *pdev)
 {
 	struct mxc_rtc_data *pdata = platform_get_drvdata(pdev);
 
-	clk_disable_unprepare(pdata->clk);
+	clk_unprepare(pdata->clk);
 }
 
 static const struct of_device_id mxc_ids[] = {
-- 
2.25.1