power: regulator: Fix incorrect use of binary and

In regulator_list_autoset there is a test for ret being non-zero and
error being zero but it uses the binary '&' instead of the logical '&&'
which could well lead to unexpected results. Correct this to use the
logical '&&' instead.

This issue found by Smatch.

Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

drivers/power/regulator/regulator-uclass.c

@@ -389,7 +389,7 @@ int regulator_list_autoset(const char *list_platname[],
 		ret = regulator_autoset_by_name(list_platname[i], &dev);
 		if (ret != -EMEDIUMTYPE && verbose)
 			regulator_show(dev, ret);
-		if (ret & !error)
+		if (ret && ret != -EALREADY && !error)
 			error = ret;
 
 		if (list_devp)