mmc: sdhci-xenon: Fix timeout checks

[ Upstream commit 0e6e7c2ff397e1bbebc882ca3132148aaaef1ddd ]

Always check the wait condition before returning timeout.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Zhoujie Wu <zjwu@marvell.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>