udf: Use 'ret' instead of abusing 'i' in udf_load_logicalvol()

Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/udf/super.c b/fs/udf/super.c
index ac8a348..9da6f4e 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1233,11 +1233,9 @@
 	BUG_ON(ident != TAG_IDENT_LVD);
 	lvd = (struct logicalVolDesc *)bh->b_data;
 
-	i = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
-	if (i != 0) {
-		ret = i;
+	ret = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
+	if (ret)
 		goto out_bh;
-	}
 
 	for (i = 0, offset = 0;
 	     i < sbi->s_partitions && offset < le32_to_cpu(lvd->mapTableLength);