stm32h7:sdmmc It is not an error if no wait was needed

   If the CONFIG_MMCSD_SDIOWAIT_WRCOMPLETE is enabled and the
   card is found to be ready in the waitenable call. Then
   we do not need a Watchdog nor to configure the pin for
   IRQ to detect ready.

   This was reported as an error, and it is not, it simply means
   we do not have to wait.

arch/arm/src/stm32h7/stm32_sdmmc.c

@@ -2797,7 +2797,7 @@ static void stm32_waitenable(struct sdio_dev_s *dev,
 #if defined(CONFIG_MMCSD_SDIOWAIT_WRCOMPLETE)
   if ((eventset & SDIOWAIT_WRCOMPLETE) != 0)
     {
-      /* Read pin to see if ready (true) skip timeout */
+      /* Read pin to see if ready (true) skip timeout and the pin IRQ */
 
       if (stm32_gpioread(priv->d0_gpio))
         {
@@ -2894,13 +2894,15 @@ static sdio_eventset_t stm32_eventwait(struct sdio_dev_s *dev)
   flags = enter_critical_section();
 
 #if defined(CONFIG_MMCSD_SDIOWAIT_WRCOMPLETE)
-  /* A card ejected while in SDIOWAIT_WRCOMPLETE can lead to a
+  /* A call to stm32_waitenable that finds the card ready or
+   * a card ejected while in SDIOWAIT_WRCOMPLETE can lead to a
    * condition where there is no waitevents set and no wkupevent
+   * This simply means we should not wait.
    */
 
   if (priv->waitevents == 0 && priv->wkupevent == 0)
     {
-      wkupevent = SDIOWAIT_ERROR;
+      wkupevent = 0;
       goto errout_with_waitints;
     }