mmc: pxamci: fix return value check of mmc_add_host()
Yang Yingliang authored
mmc_add_host() may return error, if we ignore its return value, the memory
that allocated in mmc_alloc_host() will be leaked and it will lead a kernel
crash because of deleting not added device in the remove path.

So fix this by checking the return value and goto error path which will call
mmc_free_host(), besides, ->exit() need be called to uninit the pdata.

Fixes: 1da177e4

 ("Linux-2.6.12-rc2")
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221101063023.1664968-5-yangyingliang@huawei.com

Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
80e1ef3a
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