[SPARC64]: Fix binfmt_aout32.c build.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/binfmt_aout32.c

@@ -330,7 +330,7 @@ beyond_if:
 
 	current->mm->start_stack =
 		(unsigned long) create_aout32_tables((char __user *)bprm->p, bprm);
-	tsb_context_switch(mm);
+	tsb_context_switch(current->mm);
 
 	start_thread32(regs, ex.a_entry, current->mm->start_stack);
 	if (current->ptrace & PT_PTRACED)