hw/xive: Fix unchecked return value in opal_xive_dump_emu() (CID 144257)
hw/xive: Fix unchecked return value in opal_xive_dump_emu() (CID 144257)

This is a function to display information, if xive_get_irq_targetting()
fails then the target printed would be the initial value of 0xFF. It
costs nothing to check the return value and print very obviously
question marks.

Fixes: CID 144257
Signed-off-by: Cyril Bur <6ce38dade8c4b52fd55c193fae70fd1d1275c3c3@au1.ibm.com>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

legoater/skiboot,legoater/skiboot,open-power/skiboot,shenki/skiboot,shenki/skiboot,open-power/skiboot,legoater/skiboot,open-power/skiboot,shenki/skiboot,shenki/skiboot,qemu/skiboot,qemu/skiboot,open-power/skiboot,stewart-ibm/skiboot,qemu/skiboot,qemu/skiboot,stewart-ibm/skiboot,stewart-ibm/skiboot,qemu/skiboot,open-power/skiboot,legoater/skiboot,shenki/skiboot,legoater/skiboot