drm/nouveau: do not leak in nv20_graph_create
If we return due to an unknown chipset in drivers/gpu/drm/nouveau/nv20_graph.c:nv20_graph_create() we'll leak the memory allocated to 'pgraph'. This patch should fix the leak. Signed-off-by: NJesper Juhl <jj@chaosbits.net> Reviewed-by: NMarcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
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