Hante Meuleman e0045bf80f brcmfmac: fix sdio sg table alloc crash ...

With commit 7d34b05605 ("brcmfmac: Move all module parameters to
one place") a bug was introduced causing a null pointer exception.
This patch fixes the bug by initializing the sg table till after
the settings have been initialized.

Fixes: 7d34b05605 ("brcmfmac: Move all module parameters to one place")
Reported-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <