linux-phytec-ti

net: ethernet: ti: davinci_cpdma: correct check on NULL in set rate

commit e33c2ef106d17ad8cdb16a0be0ef0daebb2d2c16 upstream.

Check "ch" on NULL first, then get ctlr.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>