ext4: error should be cleared if ea_inode isn't added to the cache

For Lustre, if ea_inode fails in hash validation but passes parent
inode and generation checks, it won't be added to the cache as well
as the error "-EFSCORRUPTED" should be cleared, otherwise it will
cause "Structure needs cleaning" when running getfattr command.

Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-9723

Cc: [email protected]
Fixes: dec214d
Signed-off-by: Emoly Liu <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]>
Reviewed-by: Andreas Dilger <[email protected]>
Reviewed-by: [email protected]

fs/ext4/xattr.c

@@ -451,6 +451,7 @@ ext4_xattr_inode_get(struct inode *inode, struct ext4_xattr_entry *entry,
 		}
 		/* Do not add ea_inode to the cache. */
 		ea_inode_cache = NULL;
+		err = 0;
 	} else if (err)
 		goto out;