arch/arm/samv7: fix leaving from critical section in HSMCI callback

Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>

arch/arm/src/sama5/sam_hsmci.c

@@ -3116,6 +3116,7 @@ static void sam_callback(void *arg)
             {
               /* No... return without performing the callback */
 
+              leave_critical_section(flags);
               return;
             }
         }
@@ -3127,6 +3128,7 @@ static void sam_callback(void *arg)
             {
               /* No... return without performing the callback */
 
+              leave_critical_section(flags);
               return;
             }
         }

arch/arm/src/samv7/sam_hsmci.c

@@ -3182,6 +3182,7 @@ static void sam_callback(void *arg)
             {
               /* No... return without performing the callback */
 
+              leave_critical_section(flags);
               return;
             }
         }
@@ -3193,6 +3194,7 @@ static void sam_callback(void *arg)
             {
               /* No... return without performing the callback */
 
+              leave_critical_section(flags);
               return;
             }
         }