iscsi class: fix get_host_stats error handling

iscsi_get_host_stats was dropping the error code returned
by drivers like qla4xxx.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index b481e62a12cc96945a937972f5c12ebaca488819..14bfa53c6f7dd45ba19731f2a7198f73ae40ba13 100644 (file)
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -3467,6 +3467,10 @@ iscsi_get_host_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh)
                memset(buf, 0, host_stats_size);
 
                err = transport->get_host_stats(shost, buf, host_stats_size);
+               if (err) {
+                       kfree(skbhost_stats);
+                       goto exit_host_stats;
+               }
 
                actual_size = nlmsg_total_size(sizeof(*ev) + host_stats_size);
                skb_trim(skbhost_stats, NLMSG_ALIGN(actual_size));