rtc: rzn1: Check return value in rzn1_rtc_probe

rtc: rzn1: Check return value in rzn1_rtc_probe

[ Upstream commit 5db32bbfba05b2e1d65fb801a8d8fcac58c90646 ]

The rzn1_rtc_probe() function utilizes devm_pm_runtime_enable()
but wasn't checking the return value. Fix it by adding missing
check.

Fixes: 2318df0ddc3b ("rtc: rzn1: Add new RTC driver")
Signed-off-by: Yushan Zhou <katrinzhou@tencent.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20221107092544.3721053-1-zys.zljxml@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>