fs/adfs: bigdir: Fix an error code in adfs_fplus_read()

This code accidentally returns success, but it should return the
-EIO error code from adfs_fplus_validate_header().
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Fixes: d79288b4 ("fs/adfs: bigdir: calculate and validate directory checkbyte")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/adfs/dir_fplus.c

@@ -114,7 +114,8 @@ static int adfs_fplus_read(struct super_block *sb, u32 indaddr,
 		return ret;
 
 	dir->bighead = h = (void *)dir->bhs[0]->b_data;
-	if (adfs_fplus_validate_header(h)) {
+	ret = adfs_fplus_validate_header(h);
+	if (ret) {
 		adfs_error(sb, "dir %06x has malformed header", indaddr);
 		goto out;
 	}