drm/i915: Drop pointless 'budget' variable

Just return the thing directly from the switch statement.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220912111814.17466-4-ville.syrjala@linux.intel.comReviewed-by: Luca Coelho <luciano.coelho@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/display/intel_dpll_mgr.c

@@ -708,8 +708,6 @@ struct hsw_wrpll_rnp {
 
 static unsigned hsw_wrpll_get_budget_for_freq(int clock)
 {
-	unsigned budget;
-
 	switch (clock) {
 	case 25175000:
 	case 25200000:
@@ -742,21 +740,18 @@ static unsigned hsw_wrpll_get_budget_for_freq(int clock)
 	case 222750000:
 	case 296703000:
 	case 297000000:
-		budget = 0;
-		break;
+		return 0;
 	case 233500000:
 	case 245250000:
 	case 247750000:
 	case 253250000:
 	case 298000000:
-		budget = 1500;
-		break;
+		return 1500;
 	case 169128000:
 	case 169500000:
 	case 179500000:
 	case 202000000:
-		budget = 2000;
-		break;
+		return 2000;
 	case 256250000:
 	case 262500000:
 	case 270000000:
@@ -766,18 +761,13 @@ static unsigned hsw_wrpll_get_budget_for_freq(int clock)
 	case 281250000:
 	case 286000000:
 	case 291750000:
-		budget = 4000;
-		break;
+		return 4000;
 	case 267250000:
 	case 268500000:
-		budget = 5000;
-		break;
+		return 5000;
 	default:
-		budget = 1000;
-		break;
+		return 1000;
 	}
-
-	return budget;
 }
 
 static void hsw_wrpll_update_rnp(u64 freq2k, unsigned int budget,