f2fs-tools: skipped to end on error syntax error

When error were found, we won't need to do any initialization but
just quit.

Signed-off-by: Robin Hsu <robinhsu@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fsck/main.c b/fsck/main.c
index 32559f1..e70048b 100644
--- a/fsck/main.c
+++ b/fsck/main.c
@@ -597,20 +597,22 @@
 		}
 	}
 
-	add_default_options();
+	if (err == NOERROR) {
+		add_default_options();
 
-	if (optind >= argc) {
-		MSG(0, "\tError: Device not specified\n");
-		error_out(prog);
-	}
+		if (optind >= argc) {
+			MSG(0, "\tError: Device not specified\n");
+			error_out(prog);
+		}
 
-	c.devices[0].path = strdup(argv[optind]);
-	if (argc > (optind + 1)) {
-		c.dbg_lv = 0;
-		err = EUNKNOWN_ARG;
+		c.devices[0].path = strdup(argv[optind]);
+		if (argc > (optind + 1)) {
+			c.dbg_lv = 0;
+			err = EUNKNOWN_ARG;
+		}
+		if (err == NOERROR)
+			return;
 	}
-	if (err == NOERROR)
-		return;
 
 	/* print out error */
 	switch (err) {