diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh
index cf7fe4d550dd..ced3f8690eb5 100644
--- a/tools/testing/selftests/net/lib.sh
+++ b/tools/testing/selftests/net/lib.sh
@@ -63,9 +63,7 @@ loopy_wait()
 	while true
 	do
 		local out
-		out=$("$@")
-		local ret=$?
-		if ((!ret)); then
+		if out=$("$@"); then
 			echo -n "$out"
 			return 0
 		fi