btrfs: tree-checker: fix bounds check in check_inode_extref()

commit e92c294 upstream.

The parentheses for the unlikely() annotation were put in the wrong
place so it means that the condition is basically never true and the
bounds checking is skipped.

Fixes: aab9458 ("btrfs: tree-checker: add inode extref checks")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Dan Carpenter

fs/btrfs/tree-checker.c

@@ -1785,7 +1785,7 @@ static int check_inode_extref(struct extent_buffer *leaf,
 		struct btrfs_inode_extref *extref = (struct btrfs_inode_extref *)ptr;
 		u16 namelen;
 
-		if (unlikely(ptr + sizeof(*extref)) > end) {
+		if (unlikely(ptr + sizeof(*extref) > end)) {
 			inode_ref_err(leaf, slot,
 			"inode extref overflow, ptr %lu end %lu inode_extref size %zu",
 				      ptr, end, sizeof(*extref));