[PATCH] mci: sunxi-mmc: do not log error message on EINVAL error

[Jules Maselbas <jmaselbas@zdiv.net>]

In the function sdxc_send_cmd: logging the error could use the
uninitialized variable `why`, this can be the case when the
sunxi_mmc_send_cmd function returns very early with the -EINVAL
error code. This doesnt needs to be logged.
Also add a default value for the variable.

Signed-off-by: Jules Maselbas <jmaselbas@zdiv.net>
---
 drivers/mci/sunxi-mmc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mci/sunxi-mmc.c b/drivers/mci/sunxi-mmc.c
index a19abbe55d..376ef2c0a9 100644
--- a/drivers/mci/sunxi-mmc.c
+++ b/drivers/mci/sunxi-mmc.c
@@ -24,11 +24,11 @@ static int sdxc_send_cmd(struct mci_host *mci, struct mci_cmd *cmd, struct mci_d
 {
 	struct sunxi_mmc_host *host = to_sunxi_mmc_host(mci);
 	struct device *dev = mci->hw_dev;
-	const char *why;
+	const char *why = "";
 	int ret;
 
 	ret = sunxi_mmc_send_cmd(host, cmd, data, &why);
-	if (ret && ret != -ETIMEDOUT)
+	if (ret && ret != -ETIMEDOUT && ret != -EINVAL)
 		dev_err(dev, "error %s CMD%d (%d)\n", why, cmd->cmdidx, ret);
 	if (ret == -ETIMEDOUT)
 		mdelay(1);
-- 
2.48.1