Potentially invalid memory accesses drivers/message/fusion/mptbase.c

[Shaobo]

Hi there,

My name is Shaobo He and I am a graduate student at University of Utah. 
I am using a static analysis tool to search for null pointer 
dereferences and came across a couple of potentially invalid memory 
accesses in the file drivers/message/fusion/mptbase.c: in function 
`mpt_turbo_reply`, variable `mf` is initialized to NULL. If the case 
`MPI_CONTEXT_REPLY_TYPE_SCSI_TARGET` is taken, then `mf` is not updated 
to a non-NULL value and then may get dereferenced in function 
`mpt_free_msg_frame`. However, there are a couple of conditions that can 
make the error path infeasible. I was wondering if you could confirm 
this.

Please let me know if it makes sense. I am looking forward to your 
reply.

Best,
Shaobo