kernel/syscall/setrlimit05.c: use a legal bad address for mips

This testcase fails on mips32. The process is killed by SIGBUS which
is not as expect.

This is because:
((void *)-1) is not a legal bad address which causes the process
killed by SIGBUG on mips.

'tst_get_bad_addr()' returns an address that should works on mips
and other arches.

Signed-off-by: Hongzhi.Song <hongzhi.song@windriver.com>
Acked-by: Cyril Hrubis <chrubis@suse.cz>

testcases/kernel/syscalls/setrlimit/setrlimit05.c

@@ -26,14 +26,16 @@
 
 #include "tst_test.h"
 
+static void *bad_addr;
+
 static void verify_setrlimit(void)
 {
 	int status;
 	pid_t pid;
 
 	pid = SAFE_FORK();
 	if (!pid) {
-		TEST(setrlimit(RLIMIT_NOFILE, (void *) -1));
+		TEST(setrlimit(RLIMIT_NOFILE, bad_addr));
 		if (TST_RET != -1) {
 			tst_res(TFAIL, "setrlimit()  succeeded unexpectedly");
 			exit(0);
@@ -67,7 +69,13 @@ static void verify_setrlimit(void)
 	tst_res(TBROK, "child %s", tst_strstatus(status));
 }
 
+static void setup(void)
+{
+	bad_addr = tst_get_bad_addr(NULL);
+}
+
 static struct tst_test test = {
 	.test_all = verify_setrlimit,
 	.forks_child = 1,
+	.setup = setup,
 };