selftests/bpf: test_xsk: Don't exit immediately when gettimeofday fails

exit_with_error() is called when gettimeofday() fails. This exits the
program immediately. It prevents the following tests from being run and
isn't compliant with the CI.

Return TEST_FAILURE instead of calling exit_on_error().

Reviewed-by: Maciej Fijalkowski <[email protected]>
Signed-off-by: Bastien Curutchet (eBPF Foundation) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>

Author: bastien-curutchet

tools/testing/selftests/bpf/test_xsk.c

@@ -1096,7 +1096,7 @@ static int receive_pkts(struct test_spec *test)
 
 	ret = gettimeofday(&tv_now, NULL);
 	if (ret)
-		exit_with_error(errno);
+		return TEST_FAILURE;
 
 	timeradd(&tv_now, &tv_timeout, &tv_end);
 
@@ -1112,7 +1112,7 @@ static int receive_pkts(struct test_spec *test)
 
 		ret = gettimeofday(&tv_now, NULL);
 		if (ret)
-			exit_with_error(errno);
+			return TEST_FAILURE;
 
 		if (timercmp(&tv_now, &tv_end, >)) {
 			ksft_print_msg("ERROR: [%s] Receive loop timed out\n", __func__);
@@ -1255,13 +1255,13 @@ static int wait_for_tx_completion(struct xsk_socket_info *xsk)
 
 	ret = gettimeofday(&tv_now, NULL);
 	if (ret)
-		exit_with_error(errno);
+		return TEST_FAILURE;
 	timeradd(&tv_now, &tv_timeout, &tv_end);
 
 	while (xsk->outstanding_tx) {
 		ret = gettimeofday(&tv_now, NULL);
 		if (ret)
-			exit_with_error(errno);
+			return TEST_FAILURE;
 		if (timercmp(&tv_now, &tv_end, >)) {
 			ksft_print_msg("ERROR: [%s] Transmission loop timed out\n", __func__);
 			return TEST_FAILURE;