fsp/ipmi: Fix an illegal memory access
fsp/ipmi: Fix an illegal memory access

The patch fixes an illegal access to the memory which has been
freed.

Fixes Coverity defect # 101858

Signed-off-by: Neelesh Gupta <0c847490c0192d1430997c36c35afbb478c33ca8@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

stewart-ibm/skiboot,mikey/skiboot,shenki/skiboot,legoater/skiboot,shenki/skiboot,open-power/skiboot,qemu/skiboot,stewart-ibm/skiboot,legoater/skiboot,legoater/skiboot,qemu/skiboot,apopple/skiboot,open-power/skiboot,mikey/skiboot,shenki/skiboot,shenki/skiboot,apopple/skiboot,open-power/skiboot,open-power/skiboot,qemu/skiboot,csmart/skiboot,csmart/skiboot,stewart-ibm/skiboot,apopple/skiboot,open-power/skiboot,legoater/skiboot,qemu/skiboot,csmart/skiboot,legoater/skiboot,shenki/skiboot,mikey/skiboot,qemu/skiboot