watchdog: imx2_wdt: Disable previously acquired clock on error path
watchdog: imx2_wdt: Disable previously acquired clock on error path

If watchdog_register_device() fails we should disable the previously
acquired wdev->clk clock on error path.

Signed-off-by: Fabio Estevam <679188261afeb60eb822cd934fd7b46a48ddd743@freescale.com>
Reviewed-by: Guenter Roeck <ba324ca7b1c77fc20bb970d5aff6eea9377918a5@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <5f65f6985de1ebf15dde04e0dc4668211868bafa@iguana.be>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs