msm: watchdog-v2: handle error condition when getting resource

Check for error condition when getting data out of resource array
for watchdog in order to exit gracefully in case of error.

Change-Id: Ib5f48891c76461f9eb0726d48b7aa2e1e6845f7c
Signed-off-by: Aparna Das <adas@codeaurora.org>