fs: ext2: Fix buffer overun

Rearrange check to make sure we do not access inode_pool[MAX_INODES].

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
diff --git a/subsys/fs/ext2/ext2_impl.c b/subsys/fs/ext2/ext2_impl.c
index 3a5382a..8714956 100644
--- a/subsys/fs/ext2/ext2_impl.c
+++ b/subsys/fs/ext2/ext2_impl.c
@@ -1501,7 +1501,7 @@
 		/* find entry */
 		uint32_t offset = 0;
 
-		while (fs->inode_pool[offset] != inode && offset < MAX_INODES) {
+		while (offset < MAX_INODES && fs->inode_pool[offset] != inode) {
 			offset++;
 		}