[PATCH 4.14 141/159] drm/armada: fix leak of crtc structure

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Russell King <rmk+ker...@armlinux.org.uk>


[ Upstream commit 33cd3c07a976e11c3c4cc6b0b3db6760ad1590c5 ]

Fix the leak of the CRTC structure in the failure paths of
armada_drm_crtc_create().

Signed-off-by: Russell King <rmk+ker...@armlinux.org.uk>
Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/gpu/drm/armada/armada_crtc.c |   25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

--- a/drivers/gpu/drm/armada/armada_crtc.c
+++ b/drivers/gpu/drm/armada/armada_crtc.c
@@ -1225,17 +1225,13 @@ static int armada_drm_crtc_create(struct
 
        ret = devm_request_irq(dev, irq, armada_drm_irq, 0, "armada_drm_crtc",
                               dcrtc);
-       if (ret < 0) {
-               kfree(dcrtc);
-               return ret;
-       }
+       if (ret < 0)
+               goto err_crtc;
 
        if (dcrtc->variant->init) {
                ret = dcrtc->variant->init(dcrtc, dev);
-               if (ret) {
-                       kfree(dcrtc);
-                       return ret;
-               }
+               if (ret)
+                       goto err_crtc;
        }
 
        /* Ensure AXI pipeline is enabled */
@@ -1246,13 +1242,15 @@ static int armada_drm_crtc_create(struct
        dcrtc->crtc.port = port;
 
        primary = kzalloc(sizeof(*primary), GFP_KERNEL);
-       if (!primary)
-               return -ENOMEM;
+       if (!primary) {
+               ret = -ENOMEM;
+               goto err_crtc;
+       }
 
        ret = armada_drm_plane_init(primary);
        if (ret) {
                kfree(primary);
-               return ret;
+               goto err_crtc;
        }
 
        ret = drm_universal_plane_init(drm, &primary->base, 0,
@@ -1263,7 +1261,7 @@ static int armada_drm_crtc_create(struct
                                       DRM_PLANE_TYPE_PRIMARY, NULL);
        if (ret) {
                kfree(primary);
-               return ret;
+               goto err_crtc;
        }
 
        ret = drm_crtc_init_with_planes(drm, &dcrtc->crtc, &primary->base, NULL,
@@ -1282,6 +1280,9 @@ static int armada_drm_crtc_create(struct
 
 err_crtc_init:
        primary->base.funcs->destroy(&primary->base);
+err_crtc:
+       kfree(dcrtc);
+
        return ret;
 }