In rte_fpga_do_pr, calling function read() may taints argument buffer
which turn to an untrusted value as argument of rte_free().
Coverity issue: 279449
Fixes: ef1e8ede3da5 ("raw/ifpga: add Intel FPGA bus rawdev driver")
Cc: stable@dpdk.org
Signed-off-by: Wei Huang <wei.huang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
ceccbcd738