drm/i915/display: fix misused comma

There is no need for a comma use here.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201221090449.8288-3-jani.nikula@intel.com

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

@@ -989,7 +989,8 @@ chv_find_best_dpll(const struct intel_limit *limit,
 	 * set to 2.  If requires to support 200Mhz refclk, we need to
 	 * revisit this because n may not 1 anymore.
 	 */
-	clock.n = 1, clock.m1 = 2;
+	clock.n = 1;
+	clock.m1 = 2;
 	target *= 5;	/* fast clock */
 
 	for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {