app/procinfo: remove useless assignment
app/procinfo: remove useless assignment

'flag' is initialized to '0' but it is overwritten later, moving the
declaration where it is used and initialize with actual value.

Fixes: 0101a0ec6217 ("app/procinfo: add --show-mempool")
Cc: stable@dpdk.org

Signed-off-by: Ferruh Yigit <ba8734c3c506d2e3557bd4ac8fdaccd25bdb9aa7@intel.com>
Reviewed-by: David Marchand <f28529695cfa9e3e1eb84e7072aa626af4abb18e@redhat.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk