memstick: mspro_block: Fix an error code in mspro_block_issue_req()

memstick: mspro_block: Fix an error code in mspro_block_issue_req()

commit 61009f82a93f7c0b33cd9b3b263a6ab48f8b49d4 upstream.

We accidentally changed the error code from -EAGAIN to 1 when we did the
blk-mq conversion.

Maybe a contributing factor to this mistake is that it wasn't obvious
that the "while (chunk) {" condition is always true.  I have cleaned
that up as well.

Fixes: d0be12274dad ("mspro_block: convert to blk-mq")
Cc: stable@vger.kernel.org
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>