pinctrl: core: Remove unnecessary test for desc->name

The implementation in pinctrl_register_one_pin() ensures pindesc->name is always
not NULL before insert the pindesc to radix tree.
If the desc return from pin_desc_get is not NULL, desc->name is always not NULL.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index faeb872..7094a81 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -153,9 +153,7 @@
 		pin = pctldev->desc->pins[i].number;
 		desc = pin_desc_get(pctldev, pin);
 		/* Pin space may be sparse */
-		if (desc == NULL)
-			continue;
-		if (desc->name && !strcmp(name, desc->name))
+		if (desc && !strcmp(name, desc->name))
 			return pin;
 	}