Avoid returning random number while parsing route failed
Avoid returning random number while parsing route failed

In current code, while parsing route information from JSON failed.
The found will be 0, and the hyper_parse_routes will not be invoked.
In this case, the r_num will not be assigned and use a random value.

This will crash the guest kernel without the commit:
d43bd26b8562fe6c96ee762d96ceb65b9b6c067f

Change-Id: I2dd321b078d33bd1c3b2864ba81110eef17c8cb4
Signed-off-by: Wei Chen <7bda119aa2bd1d28c0fb067e862b11d5acc5fc93@arm.com>

laijs/hyperstart,laijs/hyperstart,hyperhq/hyperstart,hyperhq/hyperstart