rtc: tps6594: Fix memleak in probe

struct rtc_device is allocated twice in probe(), once with
devm_kzalloc(), and then with devm_rtc_allocate_device().

The allocation with devm_kzalloc() is lost and superfluous.

Fixes: 9f67c1e6 ("rtc: tps6594: Add driver for TPS6594 RTC")
Signed-off-by: Richard Genoud <richard.genoud@bootlin.com>
Link: https://lore.kernel.org/r/20240618141851.1810000-2-richard.genoud@bootlin.comSigned-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-tps6594.c

@@ -360,10 +360,6 @@ static int tps6594_rtc_probe(struct platform_device *pdev)
 	int irq;
 	int ret;
 
-	rtc = devm_kzalloc(dev, sizeof(*rtc), GFP_KERNEL);
-	if (!rtc)
-		return -ENOMEM;
-
 	rtc = devm_rtc_allocate_device(dev);
 	if (IS_ERR(rtc))
 		return PTR_ERR(rtc);