[SCSI] libfc: adds missing exch release for accepted RRQ

Adds missing exch release when RRQ is accepted by calling
fc_seq_ls_acc. Adds common exch release for fc_exch_els_rrq
by use of out label.

Reported-by: Alex Lyakas <alexl@mellanox.co.il>
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index bdae9a9e7ae9..8ce418296537 100644
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -1718,7 +1718,7 @@ retry:
  */
 static void fc_exch_els_rrq(struct fc_seq *sp, struct fc_frame *fp)
 {
-        struct fc_exch *ep;             /* request or subject exchange */
+        struct fc_exch *ep = NULL;      /* request or subject exchange */
         struct fc_els_rrq *rp;
         u32 sid;
         u16 xid;
@@ -1768,15 +1768,16 @@ static void fc_exch_els_rrq(struct fc_seq *sp, struct fc_frame *fp)
          * Send LS_ACC.
          */
         fc_seq_ls_acc(sp);
-        fc_frame_free(fp);
-        return;
+        goto out;
 
 unlock_reject:
         spin_unlock_bh(&ep->ex_lock);
-        fc_exch_release(ep);    /* drop hold from fc_exch_find */
 reject:
         fc_seq_ls_rjt(sp, ELS_RJT_LOGIC, explan);
+out:
         fc_frame_free(fp);
+        if (ep)
+                fc_exch_release(ep);    /* drop hold from fc_exch_find */
 }
 
 struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *lport,