commit fe79018aa4c3af7d74e48b9a9b117da9fb6cf353
author Jan Glauber <jglauber@cavium.com> Thu Apr 13 14:10:51 2017 +0200
committer Ulf Hansson <ulf.hansson@linaro.org> Mon Apr 24 21:42:23 2017 +0200
tree 972b6c4575c779ee3853f0381a25139a5ad5f2e4
parent c34d1579de4665d9613691bc37aebb7ca86d535d

mmc: cavium: Check pointer before de-reference

Add a pointer check to prevent this smatch warning:

drivers/mmc/host/cavium.c:803 cvm_mmc_request()
	error: we previously assumed 'cmd->data' could be null (see line 782)

This is a theoretical fix because MMC_CMD_ADTC seems to imply
that cmd->data is not null. Nevertheless checking cmd->data
before using it improves readability.

Signed-off-by: Jan Glauber <jglauber@cavium.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>