bgmac regression: hang while probing on BCM47189

Hi,

commit 34322615cbaa ("net: bgmac: Mask interrupts during probe")
caused a regression on my Tenda AC9 router (BCM47189 SoC that belongs
to the BCM53573 family).

Calling bgmac_chip_intrs_off() that early in a probe function - for
the *second* eth interface - simply hangs my device.

I didn't see any problems caused by not having that call in the first place.
A solution seems to be also to call bgmac_clk_enable() *first*.

Should that call to the bgmac_chip_intrs_off() be conditional? Or
should we reorder bgmac_chip_intrs_off() and bgmac_clk_enable()?

-- 
Rafał