selftests: mptcp: use max_time instead of time

'time' is the local variable of run_test() function, while 'max_time' is
the local variable of do_transfer() function. So in do_transfer(),
$max_time should be used, not $time.

Please note that here $time == $max_time so the behaviour is not changed
but the right variable is used.
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tools/testing/selftests/net/mptcp/simult_flows.sh

@@ -173,7 +173,7 @@ do_transfer()
 
 	timeout ${timeout_test} \
 		ip netns exec ${ns3} \
-			./mptcp_connect -jt ${timeout_poll} -l -p $port -T $time \
+			./mptcp_connect -jt ${timeout_poll} -l -p $port -T $max_time \
 				0.0.0.0 < "$sin" > "$sout" &
 	local spid=$!
 
@@ -181,7 +181,7 @@ do_transfer()
 
 	timeout ${timeout_test} \
 		ip netns exec ${ns1} \
-			./mptcp_connect -jt ${timeout_poll} -p $port -T $time \
+			./mptcp_connect -jt ${timeout_poll} -p $port -T $max_time \
 				10.0.3.3 < "$cin" > "$cout" &
 	local cpid=$!