target/alpha: remove tlb_flush from alpha_cpu_initfn

As far as I can tell tlb_flush does not need to be called
this early. tlb_flush is eventually called after the CPU
has been realized.

This change paves the way to the introduction of tlb_init,
which will be called from cpu_exec_realizefn.
Reviewed-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: NEmilio G. Cota <cota@braap.org>
Message-Id: <20181009174557.16125-2-cota@braap.org>
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>

target/alpha/cpu.c

@@ -201,7 +201,6 @@ static void alpha_cpu_initfn(Object *obj)
     CPUAlphaState *env = &cpu->env;
 
     cs->env_ptr = env;
-    tlb_flush(cs);
 
     env->lock_addr = -1;
 #if defined(CONFIG_USER_ONLY)