[patch] drm/radeon: add a check for allocation failure

[Dan Carpenter]

We can easily return -ENOMEM here if kzalloc() fails.

Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>

diff --git a/drivers/gpu/drm/radeon/radeon_vm.c 
b/drivers/gpu/drm/radeon/radeon_vm.c
index ccae4d9..d15d987 100644
--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -483,6 +483,8 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
                        /* add a clone of the bo_va to clear the old address */
                        struct radeon_bo_va *tmp;
                        tmp = kzalloc(sizeof(struct radeon_bo_va), GFP_KERNEL);
+                       if (!tmp)
+                               return -ENOMEM;
                        tmp->it.start = bo_va->it.start;
                        tmp->it.last = bo_va->it.last;
                        tmp->vm = vm;