iw_cxgb4: fix misuse of integer variable

Fixes: ee30f7d507c0 ("iw_cxgb4: Max fastreg depth depends on DSGL support")
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
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 5332f06..c2fba76 100644
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/drivers/infiniband/hw/cxgb4/mem.c
@@ -661,7 +661,7 @@ struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd,
 	rhp = php->rhp;
 
 	if (mr_type != IB_MR_TYPE_MEM_REG ||
-	    max_num_sg > t4_max_fr_depth(&rhp->rdev.lldi.ulptx_memwrite_dsgl &&
+	    max_num_sg > t4_max_fr_depth(rhp->rdev.lldi.ulptx_memwrite_dsgl &&
 					 use_dsgl))
 		return ERR_PTR(-EINVAL);