[patch] drm/amdgpu: cleanup on error in amdgpu_cs_ioctl()

[Dan Carpenter]

We recently changed the locking in this function and now there is a
missing unlock on error.  Also there are some other resources that we
should probably release as well...

Fixes: f48b2659f521 ('drm/amdgpu: fix the broken vm->mutex V2')
Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>
---
I'm not terribly familiar with this code.  Please review this one a bit
carefully.

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 27ef528..dfc4d02 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -876,8 +876,10 @@ int amdgpu_cs_ioctl(struct drm_device *dev, void *data, 
struct drm_file *filp)
                struct amdgpu_job *job;
                struct amdgpu_ring * ring =  parser->ibs->ring;
                job = kzalloc(sizeof(struct amdgpu_job), GFP_KERNEL);
-               if (!job)
-                       return -ENOMEM;
+               if (!job) {
+                       r = -ENOMEM;
+                       goto out;
+               }
                job->base.sched = &ring->sched;
                job->base.s_entity = &parser->ctx->rings[ring->idx].entity;
                job->adev = parser->adev;