mfd: Fix s5m error handling for invalid device type
mfd: Fix s5m error handling for invalid device type

If device type is not supported in driver, have to retun error.

Signed-off-by: Jonghwan Choi <a1b1c34da4eddaa3495f0b6a971517234e873a08@samsung.com>
Signed-off-by: Samuel Ortiz <0ba86cb3f08bbb861958e54bd3438887adb4263c@linux.intel.com>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs