w1: fix slave driver registration error message
w1: fix slave driver registration error message

W1 core prints "Failed to register master driver" if error happens
on registering SLAVE driver. Fix it.

Signed-off-by: Dmitry Artamonow <456b7dca79c4dd7ef312e672ad3ed701c51aade8@inbox.ru>
Acked-by: Evgeniy Polyakov <9be07b15919dab1b45f07f962d8e37ba7c50f920@ioremap.net>
Signed-off-by: Jiri Kosina <ed58f755cc8caaf10c3e8c731a8b86fb8f13d6cb@suse.cz>

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