[PATCH 6/6] super-ddf.c: fix memleak in get_vd_num_of_subarray()

[Coly Li <colyli@xxxxxxx>]

From: Wu Guanghao <wuguanghao3@xxxxxxxxxx>

sra = sysfs_read() should be free before return in
get_vd_num_of_subarray()

Signed-off-by: Wu Guanghao <wuguanghao3@xxxxxxxxxx>
Acked-by: Mariusz Tkaczyk <mariusz.tkaczyk@xxxxxxxxxxxxxxx>
Acked-by: Coly Li <colyli@xxxxxxx>
---
 super-ddf.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/super-ddf.c b/super-ddf.c
index 309812df..b86c6acd 100644
--- a/super-ddf.c
+++ b/super-ddf.c
@@ -1592,15 +1592,20 @@ static unsigned int get_vd_num_of_subarray(struct supertype *st)
 	sra = sysfs_read(-1, st->devnm, GET_VERSION);
 	if (!sra || sra->array.major_version != -1 ||
 	    sra->array.minor_version != -2 ||
-	    !is_subarray(sra->text_version))
+	    !is_subarray(sra->text_version)) {
+		if (sra)
+			sysfs_free(sra);
 		return DDF_NOTFOUND;
+	}
 
 	sub = strchr(sra->text_version + 1, '/');
 	if (sub != NULL)
 		vcnum = strtoul(sub + 1, &end, 10);
 	if (sub == NULL || *sub == '\0' || *end != '\0' ||
-	    vcnum >= be16_to_cpu(ddf->active->max_vd_entries))
+	    vcnum >= be16_to_cpu(ddf->active->max_vd_entries)) {
+		sysfs_free(sra);
 		return DDF_NOTFOUND;
+	}
 
 	return vcnum;
 }
-- 
2.39.2