cl: Add clGetDeviceInfo missing return value checks.

Fix defects reported by Coverity Scan.

Unchecked return value (CHECKED_RETURN) check_return: Calling check_min_int without checking return value (as is done elsewhere 13 out of 16 times).

Fixes: 4f2016b2 ("cl: clGetDeviceInfo check returned values") Signed-off-by: Vinson Lee vlee@freedesktop.org