etnaviv: cosmetic etna_resource_alloc fixes

Get rid if the local bo variable, we can just assign it to the pointer
in the etna_resource struct.
Get rid of superfluous clearing of the TS bo pointer, the struct is already
zero initialized.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7367>
1 file changed