This patch ensures that the clock notifier is unregistered
when driver probe is returning error.

Fixes: df8eb569 ("i2c: Add driver for Cadence I2C controller")
Signed-off-by: NSatish Nagireddy <satish.nagireddy@getcruise.com>
Tested-by: NLars-Peter Clausen <lars@metafoo.de>
Reviewed-by: NMichal Simek <michal.simek@amd.com>
Signed-off-by: NWolfram Sang <wsa@kernel.org>