ext3: remove an unneeded check in ext3_new_blocks()

We know "fatal" is zero here.  The code can be simplified a bit by
assigning directly.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>

fs/ext3/balloc.c

@@ -1727,10 +1727,7 @@ allocated:
 	percpu_counter_sub(&sbi->s_freeblocks_counter, num);
 
 	BUFFER_TRACE(gdp_bh, "journal_dirty_metadata for group descriptor");
-	err = ext3_journal_dirty_metadata(handle, gdp_bh);
-	if (!fatal)
-		fatal = err;
-
+	fatal = ext3_journal_dirty_metadata(handle, gdp_bh);
 	if (fatal)
 		goto out;