thermal: samsung: Fix incorrect check after code merge

[ Upstream commit 3b5236cc5d086dd3ddd01113ee9255421aab9fab ]

Merge commit 19785cf9 ("Merge branch 'linus' of
git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal")
broke the code introduced by commit ffe6e16f ("thermal: exynos: Reduce
severity of too early temperature read"). Restore the original code from
the mentioned commit to finally fix the warning message during boot:

thermal thermal_zone0: failed to read out thermal zone (-22)
Reported-by: NMarian Mihailescu <mihailescu2m@gmail.com>
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Fixes: 19785cf9 ("Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal")
Reviewed-by: NKrzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: NZhang Rui <rui.zhang@intel.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

drivers/thermal/samsung/exynos_tmu.c

@@ -666,7 +666,7 @@ static int exynos_get_temp(void *p, int *temp)
 	struct exynos_tmu_data *data = p;
 	int value, ret = 0;
 
-	if (!data || !data->tmu_read || !data->enabled)
+	if (!data || !data->tmu_read)
 		return -EINVAL;
 	else if (!data->enabled)
 		/*