NTB: ntb_test: fix bug printing ntb_perf results

The code mistakenly prints the local perf results for the remote test
so the script reports identical results for both directions. Fix this
by ensuring we print the remote result.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Fixes: a9c59ef774 ("ntb_test: Add a selftest script for the NTB subsystem")
Acked-by: Allen Hubbe <Allen.Hubbe@dell.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>

tools/testing/selftests/ntb/ntb_test.sh

@@ -305,7 +305,7 @@ function perf_test()
 	echo "Running remote perf test $WITH DMA"
 	write_file "" $REMOTE_PERF/run
 	echo -n "  "
-	read_file $LOCAL_PERF/run
+	read_file $REMOTE_PERF/run
 	echo "  Passed"
 
 	_modprobe -r ntb_perf