raw/ioat: fix parameter shadow warning

raw/ioat: fix parameter shadow warning

In the function __idxd_completed_ops() we have a parameter shadow warning
due to a local variable having the same name as one of the function
parameters. This issue is fixed by simply renaming the local variable.

This warning was caught when additions were made to the OVS codebase,
which include adding calls the IOAT APIs. The OVS build passes the
-Wshadow flag by default, allowing the warning to be seen when building
OVS with DPDK 21.05-rc2.

Fixes: 245efe544d8e ("raw/ioat: report status of completed jobs")

Reported-by: Sunil Pai G <sunil.pai.g@intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Tested-by: Sunil Pai G <sunil.pai.g@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>