w1: w1_process() is not freezable kthread

w1_process() calls try_to_freeze(), but the thread doesn't mark itself
freezable through set_freezable(), so the try_to_freeze() call is useless.

Acked-by: Evgeniy Polyakov <[e-mail]>
Signed-off-by: Jiri Kosina <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/w1/w1.c

···
 			jremain = 1;
 		}
 
-		try_to_freeze();
 		__set_current_state(TASK_INTERRUPTIBLE);
 
 		/* hold list_mutex until after interruptible to prevent loosing