[PATCH 11/16] drm/msm/dp: fix error return code

[Julia Lawall]

Return a negative error code on failure.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall at lip6.fr>

---
 drivers/gpu/drm/msm/edp/edp_ctrl.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/edp/edp_ctrl.c 
b/drivers/gpu/drm/msm/edp/edp_ctrl.c
index 0ec5abd..29e52d7 100644
--- a/drivers/gpu/drm/msm/edp/edp_ctrl.c
+++ b/drivers/gpu/drm/msm/edp/edp_ctrl.c
@@ -1149,12 +1149,13 @@ int msm_edp_ctrl_init(struct msm_edp *edp)
        ctrl->aux = msm_edp_aux_init(dev, ctrl->base, &ctrl->drm_aux);
        if (!ctrl->aux || !ctrl->drm_aux) {
                pr_err("%s:failed to init aux\n", __func__);
-               return ret;
+               return -ENOMEM;
        }

        ctrl->phy = msm_edp_phy_init(dev, ctrl->base);
        if (!ctrl->phy) {
                pr_err("%s:failed to init phy\n", __func__);
+               ret = -ENOMEM;
                goto err_destory_aux;
        }