Fix the incorrect completion code for region read command

When the input data is invalid, the return code should be 0xcc,
0xc7 means the request data length is not matching with
the actual length of the request data.

Tested:
using an incorrect offset 0xff00, the command will fail with 0xcc:
ipmitool raw 0x3e 0x23 0x01 0x1 0x00 0xff
Unable to send RAW command (channel=0x0 netfn=0x3e lun=0x0 cmd=0x23 rsp=0xcc):
Invalid data field in request

Signed-off-by: Yong Li <yong.b.li@linux.intel.com>
Change-Id: Ie82fb978ca924dc64e378c8c567315f686f48059
1 file changed