[PATCH v3] drm/amdgpu: Fix a deadlock if previous GEM object allocation fails

[Pan, Xinhui]

Fall through to handle the error instead of return.

Fixes: f8aab60422c37 ("drm/amdgpu: Initialise drm_gem_object_funcs for
imported BOs")
Cc: sta...@vger.kernel.org
Signed-off-by: xinhui pan <xinhui....@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 23 ++++++++++-------------
 1 file changed, 10 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 85b292ed5c43..9e2525b96d04 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -341,21 +341,18 @@ int amdgpu_gem_create_ioctl(struct drm_device *dev, void 
*data,
        r = amdgpu_gem_object_create(adev, size, args->in.alignment,
                                     initial_domain,
                                     flags, ttm_bo_type_device, resv, &gobj);
-       if (r) {
-               if (r != -ERESTARTSYS) {
-                       if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
-                               flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
-                               goto retry;
-                       }
+       if (r && r != -ERESTARTSYS) {
+               if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
+                       flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
+                       goto retry;
+               }
 
-                       if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
-                               initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
-                               goto retry;
-                       }
-                       DRM_DEBUG("Failed to allocate GEM object (%llu, %d, 
%llu, %d)\n",
-                                 size, initial_domain, args->in.alignment, r);
+               if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
+                       initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
+                       goto retry;
                }
-               return r;
+               DRM_DEBUG("Failed to allocate GEM object (%llu, %d, %llu, 
%d)\n",
+                               size, initial_domain, args->in.alignment, r);
        }
 
        if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
-- 
2.25.1