powernv/cpuidle: Fix idle states all being marked invalid

Commit 9c7b185ab2fe ("powernv/cpuidle: Parse dt idle properties into
global structure") parses dt idle states into structs, but never marks
them valid. This results in all idle states being lost.

Fixes: 9c7b185ab2fe ("powernv/cpuidle: Parse dt idle properties into global structure")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Akshay Adiga <akshay.adiga@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/platforms/powernv/idle.c

@@ -651,11 +651,12 @@ static int __init pnv_power9_idle_init(void)
 					      &state->psscr_mask,
 					      state->flags);
 		if (err) {
-			state->valid = false;
 			report_invalid_psscr_val(state->psscr_val, err);
 			continue;
 		}
 
+		state->valid = true;
+
 		if (max_residency_ns < state->residency_ns) {
 			max_residency_ns = state->residency_ns;
 			pnv_deepest_stop_psscr_val = state->psscr_val;