iw_cxgb4: Fix an error handling path in 'c4iw_get_dma_mr()'

The error handling path of 'c4iw_get_dma_mr()' does not free resources
in the correct order.
If an error occures, it can leak 'mhp->wr_waitp'.

Fixes: a3f12da0e99a ("iw_cxgb4: allocate wait object for each memory object")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
index e90f2fd8dc16dfd0d5e1b0365fe15514b1f8dbe0..1445918e32392f28ae4ce9ea74e7df0feeddf371 100644 (file)
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/drivers/infiniband/hw/cxgb4/mem.c
@@ -489,10 +489,10 @@ struct ib_mr *c4iw_get_dma_mr(struct ib_pd *pd, int acc)
 err_dereg_mem:
        dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
                  mhp->attr.pbl_addr, mhp->dereg_skb, mhp->wr_waitp);
-err_free_wr_wait:
-       c4iw_put_wr_wait(mhp->wr_waitp);
 err_free_skb:
        kfree_skb(mhp->dereg_skb);
+err_free_wr_wait:
+       c4iw_put_wr_wait(mhp->wr_waitp);
 err_free_mhp:
        kfree(mhp);
        return ERR_PTR(ret);