cxl/hdm: Fix && vs || bug

If "info" is NULL then this code will crash.  || was intended instead of
&&.

Fixes: 8ce520fd ("cxl/hdm: Use stored Component Register mappings to map HDM decoder capability")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Robert Richter <rrichter@amd.com>
Link: https://lore.kernel.org/r/60028378-d3d5-4d6d-90fd-f915f061e731@moroto.mountain


Signed-off-by: Dan Williams <dan.j.williams@intel.com>