kzalloc() can return NULL, so I added check for it

Signed-off-by: Bojan Prtvar <prtva...@gmail.com>
---
 drivers/gpu/drm/radeon/atom.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index ebdb0fd..e88c644 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -1245,6 +1245,9 @@ struct atom_context *atom_parse(struct card_info *card, 
void *bios)
        char name[512];
        int i;
 
+       if (!ctx)
+               return NULL;
+
        ctx->card = card;
        ctx->bios = bios;
 
-- 
1.7.1

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