[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;