UBI: fix dereference after kfree

Coverity (CID 1614) spotted new_seb being dereferenced after kfree() in
create_vtbl's write_error path.
Signed-off-by: Florin Malita <fmalita@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

drivers/mtd/ubi/vtbl.c

@@ -317,14 +317,13 @@ static int create_vtbl(const struct ubi_device *ubi, struct ubi_scan_info *si,
 	return err;
 
 write_error:
-	kfree(new_seb);
-	/* May be this physical eraseblock went bad, try to pick another one */
-	if (++tries <= 5) {
+	/* Maybe this physical eraseblock went bad, try to pick another one */
+	if (++tries <= 5)
 		err = ubi_scan_add_to_list(si, new_seb->pnum, new_seb->ec,
 					   &si->corr);
+	kfree(new_seb);
 	if (!err)
 		goto retry;
-	}
 out_free:
 	ubi_free_vid_hdr(ubi, vid_hdr);
 	return err;