ext4: unindent codeblock in ext4_xattr_block_set()

ext4: unindent codeblock in ext4_xattr_block_set()

[ Upstream commit b9e19af916272c700a4ae7394680bef3704e9094 ]

Remove unnecessary else (and thus indentation level) from a code block
in ext4_xattr_block_set(). It will also make following code changes
easier. No functional changes.

CC: stable@vger.kernel.org
Fixes: 75980e9575cf ("ext4: convert to mbcache2")
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220712105436.32204-4-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>