msm: sdio: Use mmc_host data structure without accessing mmc_card

mmc_host data structure can be accessed from mmc_card data structure.
When there is a modem reset, the mmc_card structure is removed but
the mmc_host structure is never freed. Hence keep a reference to the
mmc_host data structure for use.

Change-Id: Iba7af3dd08a1fca772df15913f29484e341f9e38
CRs-fixed: 310148
Signed-off-by: Maya Erez <merez@codeaurora.org>
1 file changed